Tutorial 4 Point Type

*** Solved... only leaving for others' searches ***
*** Geez, that's what I get for lazy cut-pastes ***

*** If you get this, you are missing a using directive.. specificially using System.Drawing ***

I'm trying to do Tutorial 4 and this line:

Point mLastPosition;

throws an error because there doesn't seem to be any Point type.

Am I missing a reference or something? I thought I remembered reading (maybe in a prior tutorial even) that there was no Point type, only vectors.

Thanks to any/all for time taken to help.