usr/lib/Mail.tildehelp

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The following ~ escapes are defined:
~~              Quote a single tilde
~b users        Add users to "blind" cc list
~c users        Add users to cc list
~d              Read in dead.letter
~e              Edit the message buffer
~h              Prompt for to list, subject and cc list
~r file         Read a file into the message buffer
~p              Print the message buffer
~m messages     Read in messages, right shifted by a tab
~s subject      Set subject
~t users        Add users to to list
~v              Invoke display editor on message
~w file         Write message onto file.
~?              Print this message
~!command       Invoke the shell
~|command       Pipe the message through the command
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