[texhax] Defining a command which runs differently based ion input argument

Philip Taylor (Webmaster, Ret'd) P.Taylor at Rhul.Ac.Uk
Thu Dec 30 13:39:19 CET 2010

Uwe Lueck wrote:

> Active characters can allow tayloring syntax for special purposes.
> It is difficult and can be very tedious to program, but without
> category codes this possibility just doesn't exist.

And as I can confidently state from a near lifetime's
experience, "tayloring" syntax is at the very heart
of creative programming.


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