Improve TODO detail

weboot/resources/actions.py

@@ -139,11 +139,21 @@ def p(self, parent, key, param, value):
         """
         Store a parameter
 
-        (BUG)
-        Note: This does not cause the action to enter the traversal hierarchy
+        TODO(pwaller)
+
+        We want to support /!p/logy/1/, for example, to set options through the
+        URL. This could allow /!p/logy/0,1/ to create a multitraverser
+        with both types of plots.
+
+        The current technique doesn't work, because:
+        
+        This does not cause the action to enter the traversal hierarchy
         because `from_parent` isn't used. What is needed is a way to create
         a copy of `self` which can be placed correctly into the hierarchy.
         (pwaller) doesn't currently know how to achieve this reliably.
+
+        It's possible we can achieve this by making a special resource which 
+        wraps `self` but knows its place in the heirarchy.
         """
         self.request.params.multi.dicts += ({param: value},)
         return self