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2 The following ~ escapes are defined:
4 ~~ Quote a single tilde
5 ~. Simulate end-of-file on input
6 ~A Equivalent to: ~i Sign
7 ~a Equivalent to: ~i sign
8 ~b users Add users to Bcc list
9 ~c users Add users to Cc list
11 ~d Read in dead.letter
12 ~e Edit the message buffer
13 ~f messages Read in messages
14 ~F messages Same as ~f, but keep all header lines
15 ~h Prompt for Subject and To, Cc, and Bcc lists
16 ~i name Insert the value of the named variable
17 ~m messages Read in messages, right shifted by a tab
18 ~M messages Same as ~m, but keep all header lines
19 ~p Print the message buffer
20 ~q Quit, save partial message in dead.letter
21 ~r file Read a file into the message buffer
22 ~r !command Insert the output of the command
24 ~< !command Same as ~r
25 ~R address Set Reply-to to address
26 ~s subject Set Subject to subject
27 ~t users Add users to the To list
28 ~v Invoke display editor on message
29 ~w file Write message onto file
30 ~x Quit, do not save to dead.letter
31 ~! command Invoke the shell
32 ~| command Pipe the message through the command
34 ~_ mail-cmd Perform the command-level request
35 ~: mail-cmd Same as ~_
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