diff --git a/Global/JDeveloper.gitignore b/Global/JDeveloper.gitignore
index 94af91be..5bba6f37 100644
--- a/Global/JDeveloper.gitignore
+++ b/Global/JDeveloper.gitignore
@@ -1,6 +1,13 @@
+# default application storage directory used by the IDE Performance Cache feature
 .data/
+
+# used for ADF styles caching
 temp/
+
+# default output directories
 classes/
 deploy/
 javadoc/
+
+# lock file, a part of Oracle Credential Store Framework
 cwallet.sso.lck
\ No newline at end of file