12/17/01 : magnetHead (Tom Ingham) : Added visibility 
controls to vertices.
12/17/01 : magnetHead (Tom Ingham) : Added descriptive 
names to viewports.
12/18/01 : magnetHead (Tom Ingham) : Added getString / with 
default value / to config, calls to this function from various 
modes, and the camera controls to get key settings. GLView, and 
ModeToolbar are the two that got these.
