The URL helper is documented in [[Chapter 4 URL ../04#URL]]
I go to Chapter 4: http://py4web.com/_documentation/static/index.html#chapter-04
but the documentation isn't in there either. I needed to look it up as args is reported to be an unexpected keyword (web2py used args judging by some of my old code, but py4web uses vars instead it seems by looking at the py4web source code).
Regards,
Richard.
args = [...]
URL('foo_controller', *args, vars = dict(...) )