Re: [O] Changing [X] by something else

[Jambunathan K]

> Ctrl-S being turned into a rectangle is mysterious.  Is it the
> standard way for Emacs to tell about a non-printable character?

There is no Ctrl-S character only a tick mark in the compose-region
snippet that I shared.

You can see the tick mark if you follow this link:
http://article.gmane.org/gmane.emacs.orgmode/52281

The tickmark is produced by 
M-x ucs-insert RET CHECK MARK RET

If the above command doesn't yield a tick mark the issue is with your
setup. May be copy-paste from your Emacs client to your Elisp file
garbled the characters?
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