* gpg.sgml: Document --refresh-keys.

* gpg.sgml: Clarify --force-mdc, and document --disable-mdc.

doc/ChangeLog

@@ -1,3 +1,11 @@
+2002-10-24  David Shaw  <dshaw@jabberwocky.com>
+
+	* gpg.sgml: Document --refresh-keys.
+
+2002-10-19  David Shaw  <dshaw@jabberwocky.com>
+
+	* gpg.sgml: Clarify --force-mdc, and document --disable-mdc.
+
 2002-10-12  Werner Koch  <wk@gnupg.org>
 
 	* DETAILS (KEY_CREATED): Enhanced by fingerprint.

doc/gpg.sgml

@@ -594,6 +594,15 @@ Import the keys with the given key IDs from a keyserver. Option
 --keyserver must be used to give the name of this keyserver.
 </para></listitem></varlistentry>
 
+<varlistentry>
+<term>--refresh-keys &ParmKeyIDs;</term>
+<listitem><para>
+Request updates from a keyserver for keys that already exist on the
+local keyring.  This is useful for updating a key with the latest
+signatures, user IDs, etc.  Option --keyserver must be used to give
+the name of this keyserver.
+</para></listitem></varlistentry>
+
 <varlistentry>
 <term>--search-keys &OptParmNames;</term>
 <listitem><para>
@@ -1787,13 +1796,21 @@ changes the default hash algorithm for v3 RSA keys from MD5 to SHA-1.
 Reset the --force-v4-certs option.
 </para></listitem></varlistentry>
 
-
 <varlistentry>
 <term>--force-mdc</term>
 <listitem><para>
-Force the use of encryption with appended manipulation code.  This is
-always used with the newer ciphers (those with a blocksize greater
-than 64 bit).
+Force the use of encryption with a modification detection code.  This
+is always used with the newer ciphers (those with a blocksize greater
+than 64 bits), or if the recipient key has one of those ciphers as a
+preference.
+</para></listitem></varlistentry>
+
+<varlistentry>
+<term>--disable-mdc</term>
+<listitem><para>
+Disable the use of the modification detection code.  Note that by
+using this option, the encrypted message becomes vulnerable to a
+message modification attack.
 </para></listitem></varlistentry>
 
 <varlistentry>