The coordinate system orientation that all coordinates in the current
script are specified in, 'top-down' by default.
Set to 'bottom-up' for backward compatibility with scripts
written for Scriptographer 2.8 / CS4 and below, where the bottom-up
orientation was default.
Note that angles are oriented clockwise in the 'top-down'
coordinate system, and counter-clockwise in the 'bottom-up'
system.
Returns:
-
String ('top-down', 'bottom-up')