Hi, 1. Subpatterns talk about numbered subpatterns but does not explain where / how to use them. Recursive patterns mention them. Crosslink? I do not how to add a cross-lnik.
2. I couldn't find (?+2) and (?-2) anywhere nor I have a good idea where to put this. 3. Most important of all (?(DEFINE)) is missing. Neither this. Best, ChX
