[mythtv-users] Why 2 cards for PIP?

[Chad]

> I do this manually and find it quite handy.   You're watching a show with
> somebody.  That somebody needs to do something else for a minute (phone call,
> bathroom etc.) so you quickly zap to a different show that you are watching
> and she isn't.   As she walks back, you zap again and you're back where you
> started.

How do you save the last point you were at on the original show while
switching to whatever show you are watching that she isn't, and then
vice versa?