Re: Does \Level2Command work?

["Thomas A. Schmitz" <thomas.schmitz@uni-bonn.de>]

On Mar 29, 2007, at 10:02 AM, Steffen Wolfrum wrote:

> Hi,
>
> in one of Luigi's "Grid-keeping table"-mail I saw the term  
> "\setbox100". I didn't try that code, don't know what it means.
> But it gave me the idea: is it actually possible to use numbers in  
> defining command's names?
>
> Something like this ...
>
> \setuphead[Level2]
> [header=empty,page=yes,numbercommand= 
> \Level2Command,align=middle,alternative=paragraph,style= 
> \Level2Style,before={\strut\blank[42pt]},after={\blank[12pt]}]
> \setuphead[Level3]
> [header=empty,page=yes,numbercommand= 
> \Level3Command,align=middle,alternative=paragraph,style= 
> \Level3Style,before={\strut\blank[42pt]},after={\blank[12pt]}]
>
> ... looks much clearer than using the numbers written out in letters.
>
> Steffen

The command is \setbox, 100 is the argument to this command. This is  
pure \TeX, I think it could also be written as \setbox{100} (but I  
may be wrong here). In \TeX, numbers have a catcode which is  
different from letters, that's why they cannot normally be used in  
command words (they can, however, become control symbols). For more,  
see the TeXbook, chapter 3, or Eijkhout's wonderful TeX by Topic, ch. 2.

HTH

Thomas