Global parameters across multiple shader passes

I think I recall that it was possible to set a parameter in a cgp file which then could be used by that name in all shader passes. is there an example on the repository or could somebody explain how to do it? I stumbled on an interesting algorithm which would require using mulitple box filters with the same radius every time.

I do this in the Super-xBR passes. You can see there how I define the parameters only at the first shader and then just include a file inside the next passes. Though I don’t do this using the cgp file.

yeah I see how it works now, thx.