Selecting parameters by page

It would be useful to have a built-in way to select parameters by providing a list of custom page names or patterns for things like the Parameter CHOP and the Parameter Execute DAT. You can do it with python but it would be nice to have it built into TD.

As a side note, it would also be good to have a method in the OP class for getting custom pages by name/pattern.

Basic python implementation:

def GetPagesByName(o, names):
  return [page for page in o.customPages if page.name in names]

def GetParsByPages(o, pagenames):
  return mod.itertools.chain([page.pars for page in GetPagesByName(o, pagenames)])