diff --git a/git-author b/git-author
index 9e5ec20..7ccbfd5 100755
--- a/git-author
+++ b/git-author
@@ -1,2 +1,3 @@
 #! /bin/sh
+# greps all authors and presents them in descending commit order
 git log --all --format='%aN <%aE>' | awk '{arr[$0]++} END{for (i in arr){print arr[i], i;}}' | sort -rn;