Many commands that operate on individual messages, such as
mh-refile-msg take a
argument. This argument can be used in several ways.
If you provide the prefix argument C-u to these commands, then you will be prompted for the message range. This can be any valid MH range which can include messages, sequences (see Sequences), and the abbreviations (described in the mh(1) man page):
For example, a range that shows all of these things is ‘1 2 3 5-10 last:5 unseen’.
If the option
transient-mark-mode is turned on and you set a
region in the MH-Folder buffer, then the MH-E command will perform the
operation on all messages in that region.
The ‘mh-range’ customization group contains a single option which affects how ranges are interpreted.
Since one of the most frequent ranges used is ‘last:N’, MH-E will
interpret input such as ‘200’ as ‘last:200’ if the
mh-interpret-number-as-range-flag option is on (which is the
default). If you need to scan just the message 200, then use the range
‘200:1’ or ‘200-200’.