[NTG-context] layout parameter testing

[Alan STONE]

Hi,

With \definelayout[myLayout][...], how do you test whether one of its
parameters has a certain value, is greater than 0, etc... ?

-- 
Best,
Alan

* TeX engine = LuaTeX
* ConTeXt  minimals ver: 2008.56.06 19:11 MKIV  fmt: 2008.11.10  int:
english/english
* Ubuntu 8.04 Hardy Heron
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