RoutedUICommands are quite cool.  However, I'm struggling with a few issues.
1) the command stops at the first ui element that handles it.  Can I
actually override that behavior and proprogate it to all elements that want
to hear about the command.
2) Can I get data about where it happened?  For example, if I had a grid
with an 'insert row' command, I need to know where to insert a new row.  
Though I haven't seen anything that provides that context.  Is there a way to
walk the current focus chain up and down the ui stack?  Or is there something
easier?