Add cryptic note that E includes M

docs/user_editor.html

@@ -411,7 +411,7 @@ The available commands are listed below with explanations.
 <b>        D - Download
 </b>                User can't download files.
 <b>        E - E-mail
-</b>                User can't e-mail other users (can still e-mail sysop).
+</b>                User can't e-mail other users (includes M) (can still e-mail sysop).
 <b>        F - Forward Mail
 </b>                User can't forward mail.
 <b>        G - Edit Defaults