document Vim file patterns

diff --git a/Global/Vim.gitignore b/Global/Vim.gitignore
index 6c5ee8df160a5bd391610c1dcafaca7f083e6ab5..325bd5767970aad3634da05253be2dcb52bc5fd0 100644 (file)
--- a/Global/Vim.gitignore
+++ b/Global/Vim.gitignore
@@ -1,6 +1,10 @@
+# swap
 [._]*.s[a-w][a-z]
 [._]s[a-w][a-z]
+# persistent undo 
 *.un~
+# session
 Session.vim
+# temporary
 .netrwhist
 *~