mh-display-buttons-for-inline-parts-flag

mh-display-buttons-for-inline-parts-flag is a variable defined in `mh-e.el'.
Its value is

nil

Documentation:
*Non-nil means display buttons for all inline attachments.

The sender can request that attachments should be viewed inline so
that they do not really appear like an attachment at all to the
reader. Most of the time, this is desirable, so by default MH-E
suppresses the buttons for inline attachments. On the other hand, you
may receive code or HTML which the sender has added to his message as
inline attachments so that you can read them in MH-E. In this case, it
is useful to see the buttons so that you know you don't have to cut
and paste the code into a file; you can simply save the attachment.

If you want to make the buttons visible for inline attachments, you
can use the command K t to toggle the
visibility of these buttons. You can turn on these buttons permanently
by turning on this option.

MH-E cannot display all attachments inline however. It can display
text (including HTML) and images.

You can customize this variable.

This variable was introduced, or its default value was changed, in version 7.0 of the MH-E package that is part of Emacs 22.1.