You could use perlplusplugin to create perl/Tk windows. These windows can even be embedded in the browser window (on Linux only -- in Windows they can only be new windows).

The Tk::Text widget would be useful both to create html text and to preview mark-up (it can do bold text, etc.). There's an example in Web Client Programming with Perl of displaying HTML marked-up text in a Text widget.

In reply to Re: using perl to create a browser editor window by tall_man
in thread using perl to create a browser editor window by martymart

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