other operations of mime/editor-mode
************************************

   There are another operations in mime/editor-mode.

`<C-c C-c>'
     Send current editing message.

`<C-c C-x C-p>'
     Preview current editing message. (*Note
     (tm-view-en)mime/viewer-mode::)

`<C-c C-x C-z>'
     Exit mime/editor-mode. (<M-x mime/edit-again> is available to
     reedit.)

`<C-c C-x ?>'
     Display help message.

`<C-c C-x />'
     Set current editing message to enable automatic splitting or not.
     Form of automatic split messages is message/partial.

`<C-c C-x 7>'
     Set 7bit (See (tm-en)7bit) to transfer level (*Note transfer
     level::).

`<C-c C-x 8>'
     Set 8bit (See (tm-en)8bit) to transfer level (*Note transfer
     level::).

`<C-c C-x v>'
     Set current editing message to digital-sign or not. (cf. *Note
     PGP::)

`<C-c C-x h>'
     Set current editing message to encrypt or not. (cf. See PGP)