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(emacs)Rmail Display

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Display of Messages
===================

   Rmail reformats the header of each message before displaying it for
the first time.  Reformatting hides uninteresting header fields to
reduce clutter.  You can use the `t' command to show the entire header
or to repeat the header reformatting operation.

`t'
     Toggle display of complete header (`rmail-toggle-header').

   Reformatting the header involves deleting most header fields, on the
grounds that they are not interesting.  The variable
`rmail-ignored-headers' holds a regular expression that specifies which
header fields to hide in this way--if it matches the beginning of a
header field, that whole field is hidden.

   Rmail saves the complete original header before reformatting; to see
it, use the `t' command (`rmail-toggle-header').  This discards the
reformatted headers of the current message and displays it with the
original header.  Repeating `t' reformats the message again.  Selecting
the message again also reformats.

   One consequence of this is that if you edit the reformatted header
(using `e'; Note: Rmail Editing), subsequent use of `t' will discard
your edits.  On the other hand, if you use `e' after `t', to edit the
original (unreformatted) header, those changes are permanent.

   When the `t' command has a prefix argument, a positive argument
means to show the reformatted header, and a zero or negative argument
means to show the full header.

   When the terminal supports multiple fonts or colors, Rmail
highlights certain header fields that are especially interesting--by
default, the `From' and `Subject' fields.  The variable
`rmail-highlighted-headers' holds a regular expression that specifies
the header fields to highlight; if it matches the beginning of a header
field, that whole field is highlighted.

   If you specify unusual colors for your text foreground and
background, the colors used for highlighting may not go well with them.
If so, specify different colors for the face `rmail-highlight-face'.
Note: Faces, for how to do this.  To turn off highlighting entirely
in Rmail, set `rmail-highlighted-headers' to `nil'.

   You can highlight and activate URLs in incoming messages by adding
the function `goto-address' to the hook `rmail-show-message-hook'.
Then you can browse these URLs by clicking on them with `Mouse-2' or by
moving to one and typing `C-c <RET>'.  *Note Activating URLs:
Goto-address.