[pstricks] Where to place definitions in raw postscript

[Christoph Bersch]

Herbert Voss wrote:
>> The following code does _not_ work. I get errors when viewing the
>> ps-file with gv
> 
> \pstVerb { /testvar 1.5 def }

Thanks, I didn't know this makro.
Are there some limitations with the use of \pstVerb that one should know?

Christoph