diff --git a/README.md b/README.md
index d915b65..3387efe 100644
--- a/README.md
+++ b/README.md
@@ -43,9 +43,9 @@ Licenses sit in the `/_licenses` folder. Each license has YAML front matter desc
 * `source` - The URL to the license source text
 * `description` - A human-readable description of the license
 * `how` - Instructions on how to implement the license
-* `required` - Bulleted list of required rules
-* `permitted` - Bulleted list of permitted rules
-* `forbidden` - Bulleted list of forbidden rules
+* `permissions` - Bulleted list of permission rules
+* `conditions` - Bulleted list of condition rules
+* `limitations` - Bulleted list of limitation rules
 
 #### Optional fields
 
@@ -77,7 +77,15 @@ The license properties (rules) are stored as a bulleted list within the licenses
 
 ### Rules
 
-#### Required
+#### Permissions
+
+* `commercial-use` - This software and derivatives may be used for commercial purposes.
+* `modifications` - This software may be modified.
+* `distribution` - You may distribute this software.
+* `private-use` - You may use and modify the software without distributing it.
+* `patent-use` - This license provides an express grant of patent rights from the contributor to the recipient.
+
+#### Conditions
 
 * `include-copyright` - Include a copy of the license and copyright notice with the code.
 * `document-changes` - Indicate significant changes made to the code.
@@ -86,20 +94,11 @@ The license properties (rules) are stored as a bulleted list within the licenses
 * `rename` - You must change the name of the software if you modify it.
 * `same-license` - Modifications must be released under the same license when distributing the software. In some cases a similar or related license may be used.
 
-#### Permitted
-
-* `commercial-use` - This software and derivatives may be used for commercial purposes.
-* `modifications` - This software may be modified.
-* `distribution` - You may distribute this software.
-* `private-use` - You may use and modify the software without distributing it.
-* `patent-use` - This license provides an express grant of patent rights from the contributor to the recipient.
-
-#### Forbidden
+#### Limitations
 
 * `trademark-use` - While this may be implicitly true of all licenses, this license explicitly states that it does NOT grant you any rights in the trademarks or other marks of contributors.
 * `no-liability` - Software is provided without warranty and the software author/license owner cannot be held liable for damages.
-* `modifications` - This software may not be modified.
-* `distribution` - You may not distribute this software.
+* `patent-use` -  This license explicitly states that it does NOT grant you any rights in the patents of contributors.
 
 ## License
 
diff --git a/_data/meta.yml b/_data/meta.yml
index 8fe3d75..0b361e1 100644
--- a/_data/meta.yml
+++ b/_data/meta.yml
@@ -17,16 +17,16 @@
   description: Instructions on how to implement the license
   required: true
 
-- name: required
+- name: conditions
   description: Bulleted list of required rules
   required: true
 
-- name: permitted
+- name: permissions
   description: Bulleted list of permitted rules
   required: true
 
-- name: forbidden
-  description: Bulleted list of forbidden rules
+- name: limitations
+  description: Bulleted list of limited rules
   required: true
 
 # Optional fields
diff --git a/_data/rules.yml b/_data/rules.yml
index 2970878..bf15b75 100644
--- a/_data/rules.yml
+++ b/_data/rules.yml
@@ -1,6 +1,6 @@
-required:
+conditions:
 - description: Include a copy of the license and copyright notice with the code.
-  label: License and copyright notice
+  label: License and Copyright Notice
   tag: include-copyright
 - description: Indicate significant changes made to the code.
   label: State Changes
@@ -18,7 +18,7 @@ required:
   label: Same License
   tag: same-license
 
-permitted:
+permissions:
 - description: This software and derivatives may be used for commercial purposes.
   label: Commercial Use
   tag: commercial-use
@@ -35,10 +35,13 @@ permitted:
   label: Patent Use
   tag: patent-use
 
-forbidden:
+limitations:
 - description: While this may be implicitly true of all licenses, this license explicitly states that it does NOT grant you any rights in the trademarks or other marks of contributors.
-  label: Use Trademark
+  label: Trademark Use
   tag: trademark-use
 - description: Software is provided without warranty and the software author/license owner cannot be held liable for damages.
   label: Hold Liable
   tag: no-liability
+- description: This license explicitly states that it does NOT grant you any rights in the patents of contributors.
+  label: Patent Use
+  tag: patent-use
diff --git a/_includes/css/responsive.css b/_includes/css/responsive.css
index 3383e34..0d0120f 100644
--- a/_includes/css/responsive.css
+++ b/_includes/css/responsive.css
@@ -160,13 +160,13 @@
     top: 1px;
     position: relative;
   }
-  .license-rules:not(.license-rules-sidebar) .license-required span {
+  .license-rules:not(.license-rules-sidebar) .license-conditions span {
     background-position: -34px 0;
   }
-  .license-rules:not(.license-rules-sidebar) .license-permitted span {
+  .license-rules:not(.license-rules-sidebar) .license-permissions span {
     background-position: -24px 0px;
   }
-  .license-rules:not(.license-rules-sidebar) .license-forbidden span {
+  .license-rules:not(.license-rules-sidebar) .license-limitations span {
     background-position: -14px 0;
   }
 }
diff --git a/_includes/footer.html b/_includes/footer.html
index ffb31ef..74cef19 100644
--- a/_includes/footer.html
+++ b/_includes/footer.html
@@ -5,11 +5,11 @@
         </nav>
         <p>
           If you have questions or issues, it is always best to consult a legal professional.<br>
-          This site is licensed under the <a href="http://creativecommons.org/licenses/by/3.0/">
+          The content of this site is licensed under the <a href="https://creativecommons.org/licenses/by/3.0/">
           Creative Commons Attribution 3.0 Unported License</a>.
         </p>
         <div class="with-love">
-          Demystified with &lt;3 by <a href="http://github.com">GitHub, Inc.</a>
+          Demystified with &lt;3 by <a href="https://github.com">GitHub, Inc.</a>
         </div>
       </footer>
 
diff --git a/_includes/license-overview.html b/_includes/license-overview.html
index 83256fc..d504c20 100644
--- a/_includes/license-overview.html
+++ b/_includes/license-overview.html
@@ -35,7 +35,7 @@
       </ul>
       {% endif %}
     </div>
-    
+
     {% if license.family %}
       {% assign variations = site.licenses | where:"hidden",false | where:"family",license.family %}
     {% else %}
@@ -46,7 +46,7 @@
     <div {% if variation.id %}id="{{ variation.id | remove: '/licenses/' | slugify }}" {% endif %}class="variation-tab {% if variation.id %}variation-{{ variation.id | remove: '/licenses/' | slugify }}{% endif %} js-variation-tab{% if license.id == variation.id %} active{% endif %}">
       <table class="license-rules">
         <tr>
-        {% assign types = "required|permitted|forbidden" | split: "|" %}
+        {% assign types = "permissions|conditions|limitations" | split: "|" %}
         {% for type in types %}
           <th class="label">{{ type | capitalize }}</th>
         {% endfor %}
diff --git a/_includes/sidebar.html b/_includes/sidebar.html
index f4d2ba9..f2b9b9b 100644
--- a/_includes/sidebar.html
+++ b/_includes/sidebar.html
@@ -23,7 +23,7 @@
 
   <div class="license-rules license-rules-sidebar">
 
-  {% assign types = "required|permitted|forbidden" | split: "|" %}
+  {% assign types = "permissions|conditions|limitations" | split: "|" %}
   {% for type in types %}
     <h3>{{ type | capitalize }}</h3>
     <ul class="license-{{ type }}">
diff --git a/_includes/using-sentence.html b/_includes/using-sentence.html
new file mode 100644
index 0000000..94bea5f
--- /dev/null
+++ b/_includes/using-sentence.html
@@ -0,0 +1,17 @@
+{% assign id = "/licenses/" | append: include.license-id %}
+{% assign licenses = site.licenses | where:"id", id %}
+{% for license in licenses %}
+  {% assign using = license.using %}
+  {% if using.size > 0 %}
+    {% for used in using limit: 3 %}
+      {% assign last = forloop.last %}
+      {% if last %}
+        and
+      {% endif %}
+      {% for hash in used %}
+        <a href="{{ hash[1] }}">{{ hash[0] }}</a>{% if last == false %},{% endif %}
+      {% endfor %}
+    {% endfor %}
+    use the {% if license.nickname %}{{ license.nickname }}{% else %}{{ license.title }}{% endif %}.
+  {% endif %}
+{% endfor %}
diff --git a/_licenses/afl-3.0.txt b/_licenses/afl-3.0.txt
index 8cbe8eb..c37adce 100644
--- a/_licenses/afl-3.0.txt
+++ b/_licenses/afl-3.0.txt
@@ -6,17 +6,17 @@ description: The Academic Free License is a variant of the Open Source License t
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Files licensed under OSL 3.0 must also include the notice "Licensed under the Academic Free License version 3.0" adjacent to the copyright notice.
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
   - patent-use
 
-forbidden:
+limitations:
   - trademark-use
   - no-liability
 
diff --git a/_licenses/agpl-3.0.txt b/_licenses/agpl-3.0.txt
index 845340a..8e047c5 100644
--- a/_licenses/agpl-3.0.txt
+++ b/_licenses/agpl-3.0.txt
@@ -12,21 +12,21 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the end of the license.
 
-required:
+conditions:
   - include-copyright
   - document-changes
   - disclose-source
   - network-use-disclose
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/apache-2.0.txt b/_licenses/apache-2.0.txt
index a6620da..79c914a 100644
--- a/_licenses/apache-2.0.txt
+++ b/_licenses/apache-2.0.txt
@@ -10,18 +10,23 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: The Apache Foundation recommends taking the additional step of adding a boilerplate notice to the header of each source file. You can find the notice at the very end of the license in the appendix.
 
-required:
+using:
+  - Android: https://github.com/android/platform_system_core/blob/master/NOTICE
+  - Apache: https://svn.apache.org/viewvc/httpd/httpd/trunk/LICENSE?view=markup
+  - Swift: https://github.com/apple/swift/blob/master/LICENSE.txt
+
+conditions:
   - include-copyright
   - document-changes
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - trademark-use
   - no-liability
 
diff --git a/_licenses/artistic-2.0.txt b/_licenses/artistic-2.0.txt
index a77484c..95bd968 100644
--- a/_licenses/artistic-2.0.txt
+++ b/_licenses/artistic-2.0.txt
@@ -7,18 +7,18 @@ description: Heavily favored by the Perl community, the Artistic license require
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
-required:
+conditions:
   - include-copyright
   - document-changes
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
 
@@ -44,7 +44,7 @@ You are always permitted to make arrangements wholly outside of this
 license directly with the Copyright Holder of a given Package.  If the
 terms of this license do not permit the full use that you propose to
 make of the Package, you should contact the Copyright Holder and seek
-a different licensing arrangement. 
+a different licensing arrangement.
 
 Definitions
 
@@ -77,7 +77,7 @@ Definitions
 
     "Modified Version" means the Package, if it has been changed, and
     such changes were not explicitly requested by the Copyright
-    Holder. 
+    Holder.
 
     "Original License" means this Artistic License as Distributed with
     the Standard Version of the Package, in its current version or as
@@ -113,7 +113,7 @@ Package will still be considered the Standard Version, and as such
 will be subject to the Original License.
 
 
-Distribution of Modified Versions of the Package as Source 
+Distribution of Modified Versions of the Package as Source
 
 (4)  You may Distribute your Modified Version as Source (either gratis
 or for a Distributor Fee, and with or without a Compiled form of the
@@ -147,7 +147,7 @@ you do at least ONE of the following:
 	Fees are allowed.
 
 
-Distribution of Compiled Forms of the Standard Version 
+Distribution of Compiled Forms of the Standard Version
 or Modified Versions without the Source
 
 (5)  You may Distribute Compiled forms of the Standard Version without
@@ -165,7 +165,7 @@ the Source, provided that you comply with Section 4 with respect to
 the Source of the Modified Version.
 
 
-Aggregating or Linking the Package 
+Aggregating or Linking the Package
 
 (7)  You may aggregate the Package (either the Standard Version or
 Modified Version) with other packages and Distribute the resulting
@@ -182,7 +182,7 @@ include the Package, and Distribute the result without restriction,
 provided the result does not expose a direct interface to the Package.
 
 
-Items That are Not Considered Part of a Modified Version 
+Items That are Not Considered Part of a Modified Version
 
 (9) Works (including, but not limited to, modules and scripts) that
 merely extend or make use of the Package, do not, by themselves, cause
diff --git a/_licenses/bsd-2-clause.txt b/_licenses/bsd-2-clause.txt
index 3057cef..14fae9e 100644
--- a/_licenses/bsd-2-clause.txt
+++ b/_licenses/bsd-2-clause.txt
@@ -10,16 +10,16 @@ description: A permissive license that comes in two variants, the <a href="/lice
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/bsd-3-clause-clear.txt b/_licenses/bsd-3-clause-clear.txt
index 64f59c4..9e395c8 100644
--- a/_licenses/bsd-3-clause-clear.txt
+++ b/_licenses/bsd-3-clause-clear.txt
@@ -9,17 +9,18 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 source: https://spdx.org/licenses/BSD-3-Clause-Clear.html
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
+  - patent-use
 
 ---
 
diff --git a/_licenses/bsd-3-clause.txt b/_licenses/bsd-3-clause.txt
index 1fe4006..7ed690e 100644
--- a/_licenses/bsd-3-clause.txt
+++ b/_licenses/bsd-3-clause.txt
@@ -9,16 +9,16 @@ description: A permissive license that comes in two variants, the <a href="/lice
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders. Replace [project] with the project organization, if any, that sponsors this work.
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/cc-by-4.0.txt b/_licenses/cc-by-4.0.txt
new file mode 100644
index 0000000..5d347ac
--- /dev/null
+++ b/_licenses/cc-by-4.0.txt
@@ -0,0 +1,420 @@
+---
+title: Creative Commons Attribution 4.0
+nickname: CC-BY-4.0
+source: https://creativecommons.org/licenses/by/4.0/legalcode.txt
+
+description: Permits almost any use subject to providing credit and license notice. Frequently used for media assets and educational materials. The most common license for Open Access scientific publications. Not recommended for software.
+
+how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. It is also acceptable to soley supply a link to a copy of the license, usually to the <a href='https://creativecommons.org/licenses/by/4.0/'>canonical URL for the license</a>.
+
+conditions:
+  - include-copyright
+  - document-changes
+
+permissions:
+  - commercial-use
+  - modifications
+  - distribution
+  - private-use
+
+limitations:
+  - no-liability
+  - trademark-use
+  - patent-use
+---
+
+Attribution 4.0 International
+
+=======================================================================
+
+Creative Commons Corporation ("Creative Commons") is not a law firm and
+does not provide legal services or legal advice. Distribution of
+Creative Commons public licenses does not create a lawyer-client or
+other relationship. Creative Commons makes its licenses and related
+information available on an "as-is" basis. Creative Commons gives no
+warranties regarding its licenses, any material licensed under their
+terms and conditions, or any related information. Creative Commons
+disclaims all liability for damages resulting from their use to the
+fullest extent possible.
+
+Using Creative Commons Public Licenses
+
+Creative Commons public licenses provide a standard set of terms and
+conditions that creators and other rights holders may use to share
+original works of authorship and other material subject to copyright
+and certain other rights specified in the public license below. The
+following considerations are for informational purposes only, are not
+exhaustive, and do not form part of our licenses.
+
+     Considerations for licensors: Our public licenses are
+     intended for use by those authorized to give the public
+     permission to use material in ways otherwise restricted by
+     copyright and certain other rights. Our licenses are
+     irrevocable. Licensors should read and understand the terms
+     and conditions of the license they choose before applying it.
+     Licensors should also secure all rights necessary before
+     applying our licenses so that the public can reuse the
+     material as expected. Licensors should clearly mark any
+     material not subject to the license. This includes other CC-
+     licensed material, or material used under an exception or
+     limitation to copyright. More considerations for licensors:
+	wiki.creativecommons.org/Considerations_for_licensors
+
+     Considerations for the public: By using one of our public
+     licenses, a licensor grants the public permission to use the
+     licensed material under specified terms and conditions. If
+     the licensor's permission is not necessary for any reason--for
+     example, because of any applicable exception or limitation to
+     copyright--then that use is not regulated by the license. Our
+     licenses grant only permissions under copyright and certain
+     other rights that a licensor has authority to grant. Use of
+     the licensed material may still be restricted for other
+     reasons, including because others have copyright or other
+     rights in the material. A licensor may make special requests,
+     such as asking that all changes be marked or described.
+     Although not required by our licenses, you are encouraged to
+     respect those requests where reasonable. More_considerations
+     for the public: 
+	wiki.creativecommons.org/Considerations_for_licensees
+
+=======================================================================
+
+Creative Commons Attribution 4.0 International Public License
+
+By exercising the Licensed Rights (defined below), You accept and agree
+to be bound by the terms and conditions of this Creative Commons
+Attribution 4.0 International Public License ("Public License"). To the
+extent this Public License may be interpreted as a contract, You are
+granted the Licensed Rights in consideration of Your acceptance of
+these terms and conditions, and the Licensor grants You such rights in
+consideration of benefits the Licensor receives from making the
+Licensed Material available under these terms and conditions.
+
+
+Section 1 -- Definitions.
+
+  a. Adapted Material means material subject to Copyright and Similar
+     Rights that is derived from or based upon the Licensed Material
+     and in which the Licensed Material is translated, altered,
+     arranged, transformed, or otherwise modified in a manner requiring
+     permission under the Copyright and Similar Rights held by the
+     Licensor. For purposes of this Public License, where the Licensed
+     Material is a musical work, performance, or sound recording,
+     Adapted Material is always produced where the Licensed Material is
+     synched in timed relation with a moving image.
+
+  b. Adapter's License means the license You apply to Your Copyright
+     and Similar Rights in Your contributions to Adapted Material in
+     accordance with the terms and conditions of this Public License.
+
+  c. Copyright and Similar Rights means copyright and/or similar rights
+     closely related to copyright including, without limitation,
+     performance, broadcast, sound recording, and Sui Generis Database
+     Rights, without regard to how the rights are labeled or
+     categorized. For purposes of this Public License, the rights
+     specified in Section 2(b)(1)-(2) are not Copyright and Similar
+     Rights.
+
+  d. Effective Technological Measures means those measures that, in the
+     absence of proper authority, may not be circumvented under laws
+     fulfilling obligations under Article 11 of the WIPO Copyright
+     Treaty adopted on December 20, 1996, and/or similar international
+     agreements.
+
+  e. Exceptions and Limitations means fair use, fair dealing, and/or
+     any other exception or limitation to Copyright and Similar Rights
+     that applies to Your use of the Licensed Material.
+
+  f. Licensed Material means the artistic or literary work, database,
+     or other material to which the Licensor applied this Public
+     License.
+
+  g. Licensed Rights means the rights granted to You subject to the
+     terms and conditions of this Public License, which are limited to
+     all Copyright and Similar Rights that apply to Your use of the
+     Licensed Material and that the Licensor has authority to license.
+
+  h. Licensor means the individual(s) or entity(ies) granting rights
+     under this Public License.
+
+  i. Share means to provide material to the public by any means or
+     process that requires permission under the Licensed Rights, such
+     as reproduction, public display, public performance, distribution,
+     dissemination, communication, or importation, and to make material
+     available to the public including in ways that members of the
+     public may access the material from a place and at a time
+     individually chosen by them.
+
+  j. Sui Generis Database Rights means rights other than copyright
+     resulting from Directive 96/9/EC of the European Parliament and of
+     the Council of 11 March 1996 on the legal protection of databases,
+     as amended and/or succeeded, as well as other essentially
+     equivalent rights anywhere in the world.
+
+  k. You means the individual or entity exercising the Licensed Rights
+     under this Public License. Your has a corresponding meaning.
+
+
+Section 2 -- Scope.
+
+  a. License grant.
+
+       1. Subject to the terms and conditions of this Public License,
+          the Licensor hereby grants You a worldwide, royalty-free,
+          non-sublicensable, non-exclusive, irrevocable license to
+          exercise the Licensed Rights in the Licensed Material to:
+
+            a. reproduce and Share the Licensed Material, in whole or
+               in part; and
+
+            b. produce, reproduce, and Share Adapted Material.
+
+       2. Exceptions and Limitations. For the avoidance of doubt, where
+          Exceptions and Limitations apply to Your use, this Public
+          License does not apply, and You do not need to comply with
+          its terms and conditions.
+
+       3. Term. The term of this Public License is specified in Section
+          6(a).
+
+       4. Media and formats; technical modifications allowed. The
+          Licensor authorizes You to exercise the Licensed Rights in
+          all media and formats whether now known or hereafter created,
+          and to make technical modifications necessary to do so. The
+          Licensor waives and/or agrees not to assert any right or
+          authority to forbid You from making technical modifications
+          necessary to exercise the Licensed Rights, including
+          technical modifications necessary to circumvent Effective
+          Technological Measures. For purposes of this Public License,
+          simply making modifications authorized by this Section 2(a)
+          (4) never produces Adapted Material.
+
+       5. Downstream recipients.
+
+            a. Offer from the Licensor -- Licensed Material. Every
+               recipient of the Licensed Material automatically
+               receives an offer from the Licensor to exercise the
+               Licensed Rights under the terms and conditions of this
+               Public License.
+
+            b. No downstream restrictions. You may not offer or impose
+               any additional or different terms or conditions on, or
+               apply any Effective Technological Measures to, the
+               Licensed Material if doing so restricts exercise of the
+               Licensed Rights by any recipient of the Licensed
+               Material.
+
+       6. No endorsement. Nothing in this Public License constitutes or
+          may be construed as permission to assert or imply that You
+          are, or that Your use of the Licensed Material is, connected
+          with, or sponsored, endorsed, or granted official status by,
+          the Licensor or others designated to receive attribution as
+          provided in Section 3(a)(1)(A)(i).
+
+  b. Other rights.
+
+       1. Moral rights, such as the right of integrity, are not
+          licensed under this Public License, nor are publicity,
+          privacy, and/or other similar personality rights; however, to
+          the extent possible, the Licensor waives and/or agrees not to
+          assert any such rights held by the Licensor to the limited
+          extent necessary to allow You to exercise the Licensed
+          Rights, but not otherwise.
+
+       2. Patent and trademark rights are not licensed under this
+          Public License.
+
+       3. To the extent possible, the Licensor waives any right to
+          collect royalties from You for the exercise of the Licensed
+          Rights, whether directly or through a collecting society
+          under any voluntary or waivable statutory or compulsory
+          licensing scheme. In all other cases the Licensor expressly
+          reserves any right to collect such royalties.
+
+
+Section 3 -- License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+  a. Attribution.
+
+       1. If You Share the Licensed Material (including in modified
+          form), You must:
+
+            a. retain the following if it is supplied by the Licensor
+               with the Licensed Material:
+
+                 i. identification of the creator(s) of the Licensed
+                    Material and any others designated to receive
+                    attribution, in any reasonable manner requested by
+                    the Licensor (including by pseudonym if
+                    designated);
+
+                ii. a copyright notice;
+
+               iii. a notice that refers to this Public License;
+
+                iv. a notice that refers to the disclaimer of
+                    warranties;
+
+                 v. a URI or hyperlink to the Licensed Material to the
+                    extent reasonably practicable;
+
+            b. indicate if You modified the Licensed Material and
+               retain an indication of any previous modifications; and
+
+            c. indicate the Licensed Material is licensed under this
+               Public License, and include the text of, or the URI or
+               hyperlink to, this Public License.
+
+       2. You may satisfy the conditions in Section 3(a)(1) in any
+          reasonable manner based on the medium, means, and context in
+          which You Share the Licensed Material. For example, it may be
+          reasonable to satisfy the conditions by providing a URI or
+          hyperlink to a resource that includes the required
+          information.
+
+       3. If requested by the Licensor, You must remove any of the
+          information required by Section 3(a)(1)(A) to the extent
+          reasonably practicable.
+
+       4. If You Share Adapted Material You produce, the Adapter's
+          License You apply must not prevent recipients of the Adapted
+          Material from complying with this Public License.
+
+
+Section 4 -- Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
+     to extract, reuse, reproduce, and Share all or a substantial
+     portion of the contents of the database;
+
+  b. if You include all or a substantial portion of the database
+     contents in a database in which You have Sui Generis Database
+     Rights, then the database in which You have Sui Generis Database
+     Rights (but not its individual contents) is Adapted Material; and
+
+  c. You must comply with the conditions in Section 3(a) if You Share
+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
+  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
+     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
+     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
+     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
+     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
+     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
+     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
+     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
+     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
+     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
+
+  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
+     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
+     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
+     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
+     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
+     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
+     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
+     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
+=======================================================================
+
+Creative Commons is not a party to its public
+licenses. Notwithstanding, Creative Commons may elect to apply one of
+its public licenses to material it publishes and in those instances
+will be considered the “Licensor.” The text of the Creative Commons
+public licenses is dedicated to the public domain under the CC0 Public
+Domain Dedication. Except for the limited purpose of indicating that
+material is shared under a Creative Commons public license or as
+otherwise permitted by the Creative Commons policies published at
+creativecommons.org/policies, Creative Commons does not authorize the
+use of the trademark "Creative Commons" or any other trademark or logo
+of Creative Commons without its prior written consent including,
+without limitation, in connection with any unauthorized modifications
+to any of its public licenses or any other arrangements,
+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the
+public licenses.
+
+Creative Commons may be contacted at creativecommons.org.
diff --git a/_licenses/cc-by-sa-4.0.txt b/_licenses/cc-by-sa-4.0.txt
new file mode 100644
index 0000000..5a053b6
--- /dev/null
+++ b/_licenses/cc-by-sa-4.0.txt
@@ -0,0 +1,453 @@
+---
+title: Creative Commons Attribution Share Alike 4.0
+nickname: CC-BY-SA-4.0
+source: https://creativecommons.org/licenses/by-sa/4.0/legalcode.txt
+
+description: Similar to <a href='/licenses/cc-by-4.0/'>CC-BY-4.0</a> but requires derivatives be distributed under the same or a similar, <a href="https://creativecommons.org/compatiblelicenses/">compatible</a> license. Frequently used for media assets and educational materials. A previous version is the default license for Wikipedia and other Wikimedia projects. Not recommended for software.
+
+how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. It is also acceptable to soley supply a link to a copy of the license, usually to the <a href='https://creativecommons.org/licenses/by-sa/4.0/'>canonical URL for the license</a>.
+
+conditions:
+  - include-copyright
+  - document-changes
+  - same-license
+
+permissions:
+  - commercial-use
+  - modifications
+  - distribution
+  - private-use
+
+limitations:
+  - no-liability
+  - trademark-use
+  - patent-use
+---
+
+Attribution-ShareAlike 4.0 International
+
+=======================================================================
+
+Creative Commons Corporation ("Creative Commons") is not a law firm and
+does not provide legal services or legal advice. Distribution of
+Creative Commons public licenses does not create a lawyer-client or
+other relationship. Creative Commons makes its licenses and related
+information available on an "as-is" basis. Creative Commons gives no
+warranties regarding its licenses, any material licensed under their
+terms and conditions, or any related information. Creative Commons
+disclaims all liability for damages resulting from their use to the
+fullest extent possible.
+
+Using Creative Commons Public Licenses
+
+Creative Commons public licenses provide a standard set of terms and
+conditions that creators and other rights holders may use to share
+original works of authorship and other material subject to copyright
+and certain other rights specified in the public license below. The
+following considerations are for informational purposes only, are not
+exhaustive, and do not form part of our licenses.
+
+     Considerations for licensors: Our public licenses are
+     intended for use by those authorized to give the public
+     permission to use material in ways otherwise restricted by
+     copyright and certain other rights. Our licenses are
+     irrevocable. Licensors should read and understand the terms
+     and conditions of the license they choose before applying it.
+     Licensors should also secure all rights necessary before
+     applying our licenses so that the public can reuse the
+     material as expected. Licensors should clearly mark any
+     material not subject to the license. This includes other CC-
+     licensed material, or material used under an exception or
+     limitation to copyright. More considerations for licensors:
+	wiki.creativecommons.org/Considerations_for_licensors
+
+     Considerations for the public: By using one of our public
+     licenses, a licensor grants the public permission to use the
+     licensed material under specified terms and conditions. If
+     the licensor's permission is not necessary for any reason--for
+     example, because of any applicable exception or limitation to
+     copyright--then that use is not regulated by the license. Our
+     licenses grant only permissions under copyright and certain
+     other rights that a licensor has authority to grant. Use of
+     the licensed material may still be restricted for other
+     reasons, including because others have copyright or other
+     rights in the material. A licensor may make special requests,
+     such as asking that all changes be marked or described.
+     Although not required by our licenses, you are encouraged to
+     respect those requests where reasonable. More_considerations
+     for the public: 
+	wiki.creativecommons.org/Considerations_for_licensees
+
+=======================================================================
+
+Creative Commons Attribution-ShareAlike 4.0 International Public
+License
+
+By exercising the Licensed Rights (defined below), You accept and agree
+to be bound by the terms and conditions of this Creative Commons
+Attribution-ShareAlike 4.0 International Public License ("Public
+License"). To the extent this Public License may be interpreted as a
+contract, You are granted the Licensed Rights in consideration of Your
+acceptance of these terms and conditions, and the Licensor grants You
+such rights in consideration of benefits the Licensor receives from
+making the Licensed Material available under these terms and
+conditions.
+
+
+Section 1 -- Definitions.
+
+  a. Adapted Material means material subject to Copyright and Similar
+     Rights that is derived from or based upon the Licensed Material
+     and in which the Licensed Material is translated, altered,
+     arranged, transformed, or otherwise modified in a manner requiring
+     permission under the Copyright and Similar Rights held by the
+     Licensor. For purposes of this Public License, where the Licensed
+     Material is a musical work, performance, or sound recording,
+     Adapted Material is always produced where the Licensed Material is
+     synched in timed relation with a moving image.
+
+  b. Adapter's License means the license You apply to Your Copyright
+     and Similar Rights in Your contributions to Adapted Material in
+     accordance with the terms and conditions of this Public License.
+
+  c. BY-SA Compatible License means a license listed at
+     creativecommons.org/compatiblelicenses, approved by Creative
+     Commons as essentially the equivalent of this Public License.
+
+  d. Copyright and Similar Rights means copyright and/or similar rights
+     closely related to copyright including, without limitation,
+     performance, broadcast, sound recording, and Sui Generis Database
+     Rights, without regard to how the rights are labeled or
+     categorized. For purposes of this Public License, the rights
+     specified in Section 2(b)(1)-(2) are not Copyright and Similar
+     Rights.
+
+  e. Effective Technological Measures means those measures that, in the
+     absence of proper authority, may not be circumvented under laws
+     fulfilling obligations under Article 11 of the WIPO Copyright
+     Treaty adopted on December 20, 1996, and/or similar international
+     agreements.
+
+  f. Exceptions and Limitations means fair use, fair dealing, and/or
+     any other exception or limitation to Copyright and Similar Rights
+     that applies to Your use of the Licensed Material.
+
+  g. License Elements means the license attributes listed in the name
+     of a Creative Commons Public License. The License Elements of this
+     Public License are Attribution and ShareAlike.
+
+  h. Licensed Material means the artistic or literary work, database,
+     or other material to which the Licensor applied this Public
+     License.
+
+  i. Licensed Rights means the rights granted to You subject to the
+     terms and conditions of this Public License, which are limited to
+     all Copyright and Similar Rights that apply to Your use of the
+     Licensed Material and that the Licensor has authority to license.
+
+  j. Licensor means the individual(s) or entity(ies) granting rights
+     under this Public License.
+
+  k. Share means to provide material to the public by any means or
+     process that requires permission under the Licensed Rights, such
+     as reproduction, public display, public performance, distribution,
+     dissemination, communication, or importation, and to make material
+     available to the public including in ways that members of the
+     public may access the material from a place and at a time
+     individually chosen by them.
+
+  l. Sui Generis Database Rights means rights other than copyright
+     resulting from Directive 96/9/EC of the European Parliament and of
+     the Council of 11 March 1996 on the legal protection of databases,
+     as amended and/or succeeded, as well as other essentially
+     equivalent rights anywhere in the world.
+
+  m. You means the individual or entity exercising the Licensed Rights
+     under this Public License. Your has a corresponding meaning.
+
+
+Section 2 -- Scope.
+
+  a. License grant.
+
+       1. Subject to the terms and conditions of this Public License,
+          the Licensor hereby grants You a worldwide, royalty-free,
+          non-sublicensable, non-exclusive, irrevocable license to
+          exercise the Licensed Rights in the Licensed Material to:
+
+            a. reproduce and Share the Licensed Material, in whole or
+               in part; and
+
+            b. produce, reproduce, and Share Adapted Material.
+
+       2. Exceptions and Limitations. For the avoidance of doubt, where
+          Exceptions and Limitations apply to Your use, this Public
+          License does not apply, and You do not need to comply with
+          its terms and conditions.
+
+       3. Term. The term of this Public License is specified in Section
+          6(a).
+
+       4. Media and formats; technical modifications allowed. The
+          Licensor authorizes You to exercise the Licensed Rights in
+          all media and formats whether now known or hereafter created,
+          and to make technical modifications necessary to do so. The
+          Licensor waives and/or agrees not to assert any right or
+          authority to forbid You from making technical modifications
+          necessary to exercise the Licensed Rights, including
+          technical modifications necessary to circumvent Effective
+          Technological Measures. For purposes of this Public License,
+          simply making modifications authorized by this Section 2(a)
+          (4) never produces Adapted Material.
+
+       5. Downstream recipients.
+
+            a. Offer from the Licensor -- Licensed Material. Every
+               recipient of the Licensed Material automatically
+               receives an offer from the Licensor to exercise the
+               Licensed Rights under the terms and conditions of this
+               Public License.
+
+            b. Additional offer from the Licensor -- Adapted Material.
+               Every recipient of Adapted Material from You
+               automatically receives an offer from the Licensor to
+               exercise the Licensed Rights in the Adapted Material
+               under the conditions of the Adapter's License You apply.
+
+            c. No downstream restrictions. You may not offer or impose
+               any additional or different terms or conditions on, or
+               apply any Effective Technological Measures to, the
+               Licensed Material if doing so restricts exercise of the
+               Licensed Rights by any recipient of the Licensed
+               Material.
+
+       6. No endorsement. Nothing in this Public License constitutes or
+          may be construed as permission to assert or imply that You
+          are, or that Your use of the Licensed Material is, connected
+          with, or sponsored, endorsed, or granted official status by,
+          the Licensor or others designated to receive attribution as
+          provided in Section 3(a)(1)(A)(i).
+
+  b. Other rights.
+
+       1. Moral rights, such as the right of integrity, are not
+          licensed under this Public License, nor are publicity,
+          privacy, and/or other similar personality rights; however, to
+          the extent possible, the Licensor waives and/or agrees not to
+          assert any such rights held by the Licensor to the limited
+          extent necessary to allow You to exercise the Licensed
+          Rights, but not otherwise.
+
+       2. Patent and trademark rights are not licensed under this
+          Public License.
+
+       3. To the extent possible, the Licensor waives any right to
+          collect royalties from You for the exercise of the Licensed
+          Rights, whether directly or through a collecting society
+          under any voluntary or waivable statutory or compulsory
+          licensing scheme. In all other cases the Licensor expressly
+          reserves any right to collect such royalties.
+
+
+Section 3 -- License Conditions.
+
+Your exercise of the Licensed Rights is expressly made subject to the
+following conditions.
+
+  a. Attribution.
+
+       1. If You Share the Licensed Material (including in modified
+          form), You must:
+
+            a. retain the following if it is supplied by the Licensor
+               with the Licensed Material:
+
+                 i. identification of the creator(s) of the Licensed
+                    Material and any others designated to receive
+                    attribution, in any reasonable manner requested by
+                    the Licensor (including by pseudonym if
+                    designated);
+
+                ii. a copyright notice;
+
+               iii. a notice that refers to this Public License;
+
+                iv. a notice that refers to the disclaimer of
+                    warranties;
+
+                 v. a URI or hyperlink to the Licensed Material to the
+                    extent reasonably practicable;
+
+            b. indicate if You modified the Licensed Material and
+               retain an indication of any previous modifications; and
+
+            c. indicate the Licensed Material is licensed under this
+               Public License, and include the text of, or the URI or
+               hyperlink to, this Public License.
+
+       2. You may satisfy the conditions in Section 3(a)(1) in any
+          reasonable manner based on the medium, means, and context in
+          which You Share the Licensed Material. For example, it may be
+          reasonable to satisfy the conditions by providing a URI or
+          hyperlink to a resource that includes the required
+          information.
+
+       3. If requested by the Licensor, You must remove any of the
+          information required by Section 3(a)(1)(A) to the extent
+          reasonably practicable.
+
+  b. ShareAlike.
+
+     In addition to the conditions in Section 3(a), if You Share
+     Adapted Material You produce, the following conditions also apply.
+
+       1. The Adapter's License You apply must be a Creative Commons
+          license with the same License Elements, this version or
+          later, or a BY-SA Compatible License.
+
+       2. You must include the text of, or the URI or hyperlink to, the
+          Adapter's License You apply. You may satisfy this condition
+          in any reasonable manner based on the medium, means, and
+          context in which You Share Adapted Material.
+
+       3. You may not offer or impose any additional or different terms
+          or conditions on, or apply any Effective Technological
+          Measures to, Adapted Material that restrict exercise of the
+          rights granted under the Adapter's License You apply.
+
+
+Section 4 -- Sui Generis Database Rights.
+
+Where the Licensed Rights include Sui Generis Database Rights that
+apply to Your use of the Licensed Material:
+
+  a. for the avoidance of doubt, Section 2(a)(1) grants You the right
+     to extract, reuse, reproduce, and Share all or a substantial
+     portion of the contents of the database;
+
+  b. if You include all or a substantial portion of the database
+     contents in a database in which You have Sui Generis Database
+     Rights, then the database in which You have Sui Generis Database
+     Rights (but not its individual contents) is Adapted Material,
+
+     including for purposes of Section 3(b); and
+  c. You must comply with the conditions in Section 3(a) if You Share
+     all or a substantial portion of the contents of the database.
+
+For the avoidance of doubt, this Section 4 supplements and does not
+replace Your obligations under this Public License where the Licensed
+Rights include other Copyright and Similar Rights.
+
+
+Section 5 -- Disclaimer of Warranties and Limitation of Liability.
+
+  a. UNLESS OTHERWISE SEPARATELY UNDERTAKEN BY THE LICENSOR, TO THE
+     EXTENT POSSIBLE, THE LICENSOR OFFERS THE LICENSED MATERIAL AS-IS
+     AND AS-AVAILABLE, AND MAKES NO REPRESENTATIONS OR WARRANTIES OF
+     ANY KIND CONCERNING THE LICENSED MATERIAL, WHETHER EXPRESS,
+     IMPLIED, STATUTORY, OR OTHER. THIS INCLUDES, WITHOUT LIMITATION,
+     WARRANTIES OF TITLE, MERCHANTABILITY, FITNESS FOR A PARTICULAR
+     PURPOSE, NON-INFRINGEMENT, ABSENCE OF LATENT OR OTHER DEFECTS,
+     ACCURACY, OR THE PRESENCE OR ABSENCE OF ERRORS, WHETHER OR NOT
+     KNOWN OR DISCOVERABLE. WHERE DISCLAIMERS OF WARRANTIES ARE NOT
+     ALLOWED IN FULL OR IN PART, THIS DISCLAIMER MAY NOT APPLY TO YOU.
+
+  b. TO THE EXTENT POSSIBLE, IN NO EVENT WILL THE LICENSOR BE LIABLE
+     TO YOU ON ANY LEGAL THEORY (INCLUDING, WITHOUT LIMITATION,
+     NEGLIGENCE) OR OTHERWISE FOR ANY DIRECT, SPECIAL, INDIRECT,
+     INCIDENTAL, CONSEQUENTIAL, PUNITIVE, EXEMPLARY, OR OTHER LOSSES,
+     COSTS, EXPENSES, OR DAMAGES ARISING OUT OF THIS PUBLIC LICENSE OR
+     USE OF THE LICENSED MATERIAL, EVEN IF THE LICENSOR HAS BEEN
+     ADVISED OF THE POSSIBILITY OF SUCH LOSSES, COSTS, EXPENSES, OR
+     DAMAGES. WHERE A LIMITATION OF LIABILITY IS NOT ALLOWED IN FULL OR
+     IN PART, THIS LIMITATION MAY NOT APPLY TO YOU.
+
+  c. The disclaimer of warranties and limitation of liability provided
+     above shall be interpreted in a manner that, to the extent
+     possible, most closely approximates an absolute disclaimer and
+     waiver of all liability.
+
+
+Section 6 -- Term and Termination.
+
+  a. This Public License applies for the term of the Copyright and
+     Similar Rights licensed here. However, if You fail to comply with
+     this Public License, then Your rights under this Public License
+     terminate automatically.
+
+  b. Where Your right to use the Licensed Material has terminated under
+     Section 6(a), it reinstates:
+
+       1. automatically as of the date the violation is cured, provided
+          it is cured within 30 days of Your discovery of the
+          violation; or
+
+       2. upon express reinstatement by the Licensor.
+
+     For the avoidance of doubt, this Section 6(b) does not affect any
+     right the Licensor may have to seek remedies for Your violations
+     of this Public License.
+
+  c. For the avoidance of doubt, the Licensor may also offer the
+     Licensed Material under separate terms or conditions or stop
+     distributing the Licensed Material at any time; however, doing so
+     will not terminate this Public License.
+
+  d. Sections 1, 5, 6, 7, and 8 survive termination of this Public
+     License.
+
+
+Section 7 -- Other Terms and Conditions.
+
+  a. The Licensor shall not be bound by any additional or different
+     terms or conditions communicated by You unless expressly agreed.
+
+  b. Any arrangements, understandings, or agreements regarding the
+     Licensed Material not stated herein are separate from and
+     independent of the terms and conditions of this Public License.
+
+
+Section 8 -- Interpretation.
+
+  a. For the avoidance of doubt, this Public License does not, and
+     shall not be interpreted to, reduce, limit, restrict, or impose
+     conditions on any use of the Licensed Material that could lawfully
+     be made without permission under this Public License.
+
+  b. To the extent possible, if any provision of this Public License is
+     deemed unenforceable, it shall be automatically reformed to the
+     minimum extent necessary to make it enforceable. If the provision
+     cannot be reformed, it shall be severed from this Public License
+     without affecting the enforceability of the remaining terms and
+     conditions.
+
+  c. No term or condition of this Public License will be waived and no
+     failure to comply consented to unless expressly agreed to by the
+     Licensor.
+
+  d. Nothing in this Public License constitutes or may be interpreted
+     as a limitation upon, or waiver of, any privileges and immunities
+     that apply to the Licensor or You, including from the legal
+     processes of any jurisdiction or authority.
+
+
+=======================================================================
+
+Creative Commons is not a party to its public
+licenses. Notwithstanding, Creative Commons may elect to apply one of
+its public licenses to material it publishes and in those instances
+will be considered the “Licensor.” The text of the Creative Commons
+public licenses is dedicated to the public domain under the CC0 Public
+Domain Dedication. Except for the limited purpose of indicating that
+material is shared under a Creative Commons public license or as
+otherwise permitted by the Creative Commons policies published at
+creativecommons.org/policies, Creative Commons does not authorize the
+use of the trademark "Creative Commons" or any other trademark or logo
+of Creative Commons without its prior written consent including,
+without limitation, in connection with any unauthorized modifications
+to any of its public licenses or any other arrangements,
+understandings, or agreements concerning use of licensed material. For
+the avoidance of doubt, this paragraph does not form part of the
+public licenses.
+
+Creative Commons may be contacted at creativecommons.org.
diff --git a/_licenses/cc0-1.0.txt b/_licenses/cc0-1.0.txt
index 6ddc723..0e1e268 100644
--- a/_licenses/cc0-1.0.txt
+++ b/_licenses/cc0-1.0.txt
@@ -10,19 +10,20 @@ description: The <a href="http://creativecommons.org/publicdomain/zero/1.0/">Cre
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the CC0 into the file.
 
-required:
+conditions:
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
+  - patent-use
 
-required: []
+conditions: []
 
 hidden: false
 ---
diff --git a/_licenses/epl-1.0.txt b/_licenses/epl-1.0.txt
index 4de95c6..bf9f34d 100644
--- a/_licenses/epl-1.0.txt
+++ b/_licenses/epl-1.0.txt
@@ -13,21 +13,21 @@ using:
   - Clojure: "http://clojure.org/"
   - JUnit: "http://junit.org/"
   - Ruby: "https://github.com/jruby/jruby"
-  - Mondrian: "http://en.wikipedia.org/wiki/Mondrian_OLAP_server"
+  - Mondrian: "https://en.wikipedia.org/wiki/Mondrian_OLAP_server"
 
-required:
+conditions:
   - disclose-source
   - include-copyright
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - distribution
   - modifications
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/eupl-1.1.txt b/_licenses/eupl-1.1.txt
index 5b9d6a6..893f3cb 100644
--- a/_licenses/eupl-1.1.txt
+++ b/_licenses/eupl-1.1.txt
@@ -12,21 +12,21 @@ how: Create a text file (typically named COPYING or LICENCE.txt) in the root of
 
 note: The European Commission recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at https://joinup.ec.europa.eu/sites/default/files/ckeditor_files/files/EUPL%201_1%20Guidelines%20EN%20Joinup.pdf
 
-required:
+conditions:
   - include-copyright
   - disclose-source
   - document-changes
   - network-use-disclose
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
 
diff --git a/_licenses/gpl-2.0.txt b/_licenses/gpl-2.0.txt
index ec25a7f..23f940a 100644
--- a/_licenses/gpl-2.0.txt
+++ b/_licenses/gpl-2.0.txt
@@ -12,20 +12,24 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the end of the license.
 
-required:
+using:
+  - Linux: https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/COPYING
+  - WordPress: https://github.com/WordPress/WordPress/blob/master/license.txt
+
+conditions:
   - include-copyright
   - document-changes
   - disclose-source
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/gpl-3.0.txt b/_licenses/gpl-3.0.txt
index ce6bc43..e83cc53 100644
--- a/_licenses/gpl-3.0.txt
+++ b/_licenses/gpl-3.0.txt
@@ -12,20 +12,25 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the end of the license.
 
-required:
+using:
+  - Bash: http://git.savannah.gnu.org/cgit/bash.git/tree/COPYING
+  - GIMP: https://git.gnome.org/browse/gimp/tree/COPYING
+  - Privacy Badger: https://github.com/EFForg/privacybadgerfirefox/blob/master/LICENSE
+
+conditions:
   - include-copyright
   - document-changes
   - disclose-source
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/isc.txt b/_licenses/isc.txt
index 6649824..b7a8850 100644
--- a/_licenses/isc.txt
+++ b/_licenses/isc.txt
@@ -7,16 +7,16 @@ description: A permissive license lets people do anything with your code with pr
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - distribution
   - modifications
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/lgpl-2.1.txt b/_licenses/lgpl-2.1.txt
index d268283..5b1f6f8 100644
--- a/_licenses/lgpl-2.1.txt
+++ b/_licenses/lgpl-2.1.txt
@@ -12,19 +12,19 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the end of the license.
 
-required:
+conditions:
   - include-copyright
   - disclose-source
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/lgpl-3.0.txt b/_licenses/lgpl-3.0.txt
index 2a6be8b..9d334df 100644
--- a/_licenses/lgpl-3.0.txt
+++ b/_licenses/lgpl-3.0.txt
@@ -11,20 +11,20 @@ how: This license is an additional set of permissions to the <a href="/licenses/
 
 note: The Free Software Foundation recommends taking the additional step of adding a boilerplate notice to the top of each file. The boilerplate can be found at the end of the <a href="/licenses/gpl-3.0">GNU GPLv3 license</a>. Insert the word “Lesser” before “General” in all three places in the boilerplate notice to make sure that you refer to the GNU LGPLv3 and not the GNU GPLv3.
 
-required:
+conditions:
   - include-copyright
   - disclose-source
   - same-license
 
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/lppl-1.3c.txt b/_licenses/lppl-1.3c.txt
index 9ccbb2e..eb78cd3 100644
--- a/_licenses/lppl-1.3c.txt
+++ b/_licenses/lppl-1.3c.txt
@@ -11,18 +11,18 @@ how: To use this license, place in each of the components of your work both an e
 
 note: An example boilerplate and more information about how to use the license can be found at the end of the license.
 
-required:
+conditions:
   - include-copyright
   - document-changes 
   - disclose-source
   
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   
 ---
diff --git a/_licenses/mit.txt b/_licenses/mit.txt
index d90d699..17ed29e 100644
--- a/_licenses/mit.txt
+++ b/_licenses/mit.txt
@@ -1,22 +1,27 @@
 ---
 title: MIT License
 featured: true
-source: http://opensource.org/licenses/MIT
+source: https://opensource.org/licenses/MIT
 
 description: A permissive license that is short and to the point. It lets people do anything with your code with proper attribution and without warranty.
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file. Replace [year] with the current year and [fullname] with the name (or names) of the copyright holders.
 
-required:
+using:
+  - jQuery: https://github.com/jquery/jquery/blob/master/LICENSE.txt
+  - .NET Core: https://github.com/dotnet/corefx/blob/master/LICENSE
+  - Rails: https://github.com/rails/rails/blob/master/activerecord/MIT-LICENSE
+
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden:
+limitations:
   - no-liability
 
 hidden: false
diff --git a/_licenses/mpl-2.0.txt b/_licenses/mpl-2.0.txt
index 1af99b4..b64ec40 100644
--- a/_licenses/mpl-2.0.txt
+++ b/_licenses/mpl-2.0.txt
@@ -7,19 +7,19 @@ description: The Mozilla Public License (MPL 2.0) is maintained by the Mozilla f
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file.
 
-required:
+conditions:
   - disclose-source
   - include-copyright
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
 
diff --git a/_licenses/ms-pl.txt b/_licenses/ms-pl.txt
index 622baa3..3071915 100644
--- a/_licenses/ms-pl.txt
+++ b/_licenses/ms-pl.txt
@@ -7,17 +7,17 @@ description: "Microsoft Open Source"
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file.
 
-required:
+conditions:
   - include-copyright
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
 ---
diff --git a/_licenses/ms-rl.txt b/_licenses/ms-rl.txt
index 65c8a4d..25796ab 100644
--- a/_licenses/ms-rl.txt
+++ b/_licenses/ms-rl.txt
@@ -7,18 +7,18 @@ description: "Microsoft Open Source"
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file.
 
-required:
+conditions:
   - include-copyright
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - no-liability
   - trademark-use
 ---
diff --git a/_licenses/ofl-1.1.txt b/_licenses/ofl-1.1.txt
index ec92f1c..965f3f7 100644
--- a/_licenses/ofl-1.1.txt
+++ b/_licenses/ofl-1.1.txt
@@ -9,17 +9,17 @@ how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of
 
 note: This license doesn't require source provision, but recommends it. All files derived from OFL files must remain licensed under the OFL.
 
-required:
+conditions:
   - include-copyright
   - same-license
 
-permitted:
+permissions:
   - private-use
   - commercial-use
   - modifications
   - distribution
 
-forbidden:
+limitations:
   - no-liability
 
 ---
diff --git a/_licenses/osl-3.0.txt b/_licenses/osl-3.0.txt
index 8b7e2e4..d37ecd8 100644
--- a/_licenses/osl-3.0.txt
+++ b/_licenses/osl-3.0.txt
@@ -15,19 +15,19 @@ using:
   - Mulgara: "http://mulgara.org"
   - AbanteCart: "https://github.com/abantecart/abantecart-src"
 
-required:
+conditions:
   - include-copyright
   - disclose-source
   - same-license
 
-permitted:
+permissions:
   - commercial-use
   - distribution
   - modifications
   - patent-use
   - private-use
 
-forbidden:
+limitations:
   - trademark-use
   - no-liability
 
diff --git a/_licenses/unlicense.txt b/_licenses/unlicense.txt
index c2d8b1e..b323992 100644
--- a/_licenses/unlicense.txt
+++ b/_licenses/unlicense.txt
@@ -7,18 +7,18 @@ description: Because copyright is automatic in most countries, <a href="http://u
 
 how: Create a text file (typically named UNLICENSE or UNLICENSE.txt) in the root of your source code and copy the text of the license disclaimer into the file.
 
-required:
+conditions:
 
-permitted:
+permissions:
   - private-use
   - commercial-use
   - modifications
   - distribution
 
-forbidden:
+limitations:
   - no-liability
 
-required: []
+conditions: []
 
 hidden: false
 ---
diff --git a/_licenses/wtfpl.txt b/_licenses/wtfpl.txt
index 386c511..bfb1250 100644
--- a/_licenses/wtfpl.txt
+++ b/_licenses/wtfpl.txt
@@ -6,15 +6,15 @@ description: The easiest licence out there. It gives the user permissions to do
 
 how: Create a text file (typically named LICENSE or LICENSE.txt) in the root of your source code and copy the text of the license into the file.
 
-required: []
+conditions: []
 
-permitted:
+permissions:
   - commercial-use
   - modifications
   - distribution
   - private-use
 
-forbidden: []
+limitations: []
 
 ---
 
diff --git a/about.md b/about.md
index 9a8b306..2642584 100644
--- a/about.md
+++ b/about.md
@@ -16,8 +16,8 @@ This site is not a comprehensive directory of open source licenses. We think the
 
 {: .bullets}
 
-* [Open Source Initiative](http://opensource.org/licenses/) - comprehensive list of open source licenses
-* [Comparison of free and open-source software licenses](http://en.wikipedia.org/wiki/Comparison_of_free_and_open-source_software_licenses) on Wikipedia
+* [Open Source Initiative](https://opensource.org/licenses/) - comprehensive list of open source licenses
+* [Comparison of free and open-source software licenses](https://en.wikipedia.org/wiki/Comparison_of_free_and_open-source_software_licenses) on Wikipedia
 * [License differentiator](http://www.oss-watch.ac.uk/apps/licdiff/) from [OSS Watch](http://www.oss-watch.ac.uk/)
 * [TLDRLegal](https://tldrlegal.com/){: data-proofer-ignore="true" }
 
diff --git a/assets/css/application.scss b/assets/css/application.scss
index fc3f71e..1105a88 100644
--- a/assets/css/application.scss
+++ b/assets/css/application.scss
@@ -32,6 +32,10 @@ h1 {
   margin-bottom: 25px;
 }
 
+.license h1 {
+  max-width: 700px;
+}
+
 h2 {
   opacity: 0.8;
   font-size: 24px;
@@ -241,9 +245,9 @@ strong {
 }
 
 .sidebar .source span   { background-position: 0 0;     width: 16px; height: 12px; }
-.license-forbidden span { background-position: -16px 0; width: 12px; height: 12px; }
-.license-permitted span { background-position: -28px 0; width: 12px; height: 12px; }
-.license-required span  { background-position: -40px 0; width: 12px; height: 12px; }
+.license-limitations span { background-position: -16px 0; width: 12px; height: 12px; }
+.license-permissions span { background-position: -28px 0; width: 12px; height: 12px; }
+.license-conditions span  { background-position: -40px 0; width: 12px; height: 12px; }
 
 .license-rules-sidebar li {
   float: none;
@@ -416,25 +420,25 @@ strong {
 
 /* Qtip styles */
 
-.qtip-required,
-.qtip-permitted,
-.qtip-forbidden {
+.qtip-conditions,
+.qtip-permissions,
+.qtip-limitations {
   font-size: 12px;
   line-height: 1.3;
 }
 
-.qtip-required {
+.qtip-conditions {
   background-color: #d0ebf6;
   border-color: #149ad4;
   color: #0d648a;
 }
 
-.qtip-required .qtip-titlebar {
+.qtip-conditions .qtip-titlebar {
   background-color: #149ad4;
   color: #fff;
 }
 
-.qtip-permitted {
+.qtip-permissions {
   background-color: #d8f4d7;
   border-color: #3dc637;
   color: #298625;
@@ -445,13 +449,13 @@ strong {
   color: #fff;
 }
 
-.qtip-forbidden {
+.qtip-limitations {
   background-color: #f4d9d8;
   border-color: #c6403d;
   color: #812a28;
 }
 
-.qtip-forbidden .qtip-titlebar {
+.qtip-limitations .qtip-titlebar {
   background-color: #c6403d;
   color: #fff;
 }
diff --git a/index.html b/index.html
index 85d13f2..5cdfa7e 100644
--- a/index.html
+++ b/index.html
@@ -21,7 +21,7 @@ permalink: /
       The <a href="licenses/mit">MIT License</a> is a permissive license that is short and to the point. It lets people do anything they want with your code as long as they provide attribution back to you and don’t hold you liable.
     </p>
     <p>
-      <strong>jQuery</strong>, <strong>Rails</strong> and <strong>.NET Core</strong> use the MIT&nbsp;License.
+      {% include using-sentence.html license-id="mit" %}
     </p>
   </li>
   <li class="patents">
@@ -33,7 +33,7 @@ permalink: /
       The <a href="licenses/apache-2.0/">Apache License 2.0</a> is a permissive license similar to the MIT License, but also provides an express grant of patent rights from contributors to users.
     </p>
     <p>
-      <strong>Apache</strong>, <strong>Swift</strong>, and <strong>Android</strong> use the Apache&nbsp;License&nbsp;2.0.
+      {% include using-sentence.html license-id="apache-2.0" %}
     </p>
   </li>
   <li class="copyleft">
@@ -42,10 +42,10 @@ permalink: /
       <h3>I care about sharing improvements.</h3>
     </a>
     <p>
-      The GNU GPL (<a href="licenses/gpl-2.0/">V2</a> or <a href="licenses/gpl-3.0/">V3</a>) is a copyleft license that requires anyone who distributes your code or a derivative work to make the source available under the same terms. V3 is similar to V2, but further restricts use in hardware that forbids software alterations.
+      The <a href="licenses/gpl-3.0/">GNU GPLv3</a> is a copyleft license that requires anyone who distributes your code or a derivative work to make the source available under the same terms, and also provides an express grant of patent rights from contributors to users.
     </p>
     <p>
-      <strong>WordPress</strong>, <strong>Linux</strong>, and <strong>Bash</strong> use the GNU GPL.
+      {% include using-sentence.html license-id="gpl-3.0" %}
     </p>
   </li>
 </ul>
@@ -56,9 +56,9 @@ permalink: /
 </h2>
 <ul class="triptych see-more clearfix">
   <li>
-    <h3>My content isn’t code.</h3>
+    <h3>My project isn’t software.</h3>
     <p>
-      Check out <a href="http://creativecommons.org/choose/">Creative Commons</a>.
+      <a href="non-software">There are licenses for that</a>.
     </p>
   </li>
   <li>
diff --git a/non-software.md b/non-software.md
new file mode 100644
index 0000000..8bcade8
--- /dev/null
+++ b/non-software.md
@@ -0,0 +1,23 @@
+---
+title: Non-Software Licenses
+layout: default
+permalink: /non-software/
+---
+
+Open source software licenses can be used for non-software works, and often are the best choice. This is particularly the case when the works in question can be edited and versioned as source, e.g., [open source hardware](http://www.oshwa.org/definition/) designs. Choose an [open source license](/licenses/).
+
+### Data, media, etc.
+
+[CC0-1.0](/licenses/cc0-1.0/), [CC-BY-4.0](/licenses/cc-by-4.0/), and [CC-BY-SA-4.0](/licenses/cc-by-sa-4.0/) are [open](http://opendefinition.org) licenses used for non-software material ranging from datasets to videos. Note that CC-BY-4.0 and CC-BY-SA-4.0 should [not be used for software](https://creativecommons.org/faq/#can-i-apply-a-creative-commons-license-to-software).
+
+### Documentation
+
+Any open source software license or open Creative Commons license is applicable to software documentation. If you use different licenses for your software and its documentation, you may wish to take care that source code examples in the documentation are also licensed under the software license.
+
+### Fonts
+
+The [SIL Open Font License 1.1](/licenses/ofl-1.1/) keeps fonts open but allows them to be freely used in other works.
+
+### Mixed Projects
+
+If your project contains a mix of software and other material, you can include multiple licenses, as long as you are explicit about which license applies to what parts of the project.  See [the license notice for this site](https://github.com/github/choosealicense.com#license) as an example.
diff --git a/spec/license_spec.rb b/spec/license_spec.rb
index bd97837..2f7cca6 100644
--- a/spec/license_spec.rb
+++ b/spec/license_spec.rb
@@ -26,7 +26,7 @@ describe 'licenses' do
       end
 
       context 'minimum permissions' do
-        let(:permissions) { license['permitted'] }
+        let(:permissions) { license['permissions'] }
         it 'should allow commercial use' do
           expect(permissions).to include('commercial-use')
         end