I have not seen any topics about this so I will ask now.
I have been working with another BPM tool that uses Query 3.01 also and we needed to add Functions to the xquery other then the standard.
For example we use these a lot: http://www.xqueryfunctions.com. The environment allows us to add these so we can easily start using them.
Is this possible in YAWL.
I can imagine this would enhance the YAWL environment.