If you input `M-x mew', Mew moves messages from your spool to the +inbox folder and displays as follows:
1 07/17 Itojun v6: items to be no in6_pcbnotify() doesn't
2 07/18 Utashiro Re: behavior after I'm afraid that mark-ring
3 07/19 Nom-sun refile info. Sorry for my late respon
We call this Summary mode. This section mainly explains how to read messages in Summary mode.