diff --git a/sh/argc b/sh/argc
index 5a27626..0b445c8 100644
--- a/sh/argc
+++ b/sh/argc
@@ -4,9 +4,9 @@
 # YES_DASH
 # YES_ASH
 
-argc() { ### @-
+argc() { ### @- validate the number of arguments in a function.
     ### ```sh
-    ### # usage:
+    ### # usage: myfunc() { argc -(eq|le|ge) [0-9] "$0" "$@" || return; }
     ###
     ### myfunc() {
     ###     # use one of the following: