This implements an ANSI terminal emulator as a subclass of screen.
$Id: ANSI.py 491 2007-12-16 20:04:57Z noah $
This class encapsulates a generic terminal. It filters a stream and maintains the state of a screen object.
This puts a character at the current cursor position. cursor position if moved forward with wrap-around, but no scrolling is done if the cursor hits the lower-right corner of the screen.
This is a placeholder. In theory I might want to add other terminal types.