Blocks build question

[Mats Norén]

Hi,
I´m trying to integrate an application of ours as a block, and I have a 
simple buildquestion:
I want to filter the contents of the files which are copied to web-inf 
how do I go about it?
If I look at the generated blocks-build.xml I can see that filtering is 
turned on, but I can´t see where the tokens are defined (if at all).
So my question is, which property file should I put my tokens in?

/Mats