This is a really small one, but can cost a bit of time...
Henning -- "Windows is a 64 bit tweak of a 32-bit extension to a 16-bit user interface for an 8-bit operating system based on a 4-bit architecture from a 2-bit company that can't stand 1 bit of competition."
96c96 < self.left = parent_top --- > self.top = parent_top
