Tips for creating NiChannel style forum software implemented in [TclHttpd].

----

Generating captcha images (http://www.captcha.net) for anti-spam purposes.

Using [ImageMagick] convert routine, where the captcha code is RKS876:

   convert captcha.png -gravity center -pointsize 24 -fill white -annotate 0 'RKS876' -swirl 90 captcha-done.png