[bug-mailutils] hit RET and are shown message 2

[Dan Jacobson]

$ mail
"/var/mail/jidanni": 2 messages 2 new
>N   1 root               二  7月 29 05:06  13/445   Monthly fax stats - by sender
 N   2 root               二  7月 29 05:06  13/450   Monthly fax stats - by 
destination
& 
To: <address@hidden>
Subject: Monthly fax stats - by destination

oh great, the arrow is on message 1 but I hit return and am shown
message 2.

the ? command doesn't show a binding for RET.

there is no man page (on debian at least).

the info page doesn't have a keystroke index.