A palette is a Bundle that provides some kind of GUI functionality.
Otherwise it is similar to the Bundle project, and uses it's variables
as well (see Bundles).
— Palettes: PALETTE_NAME
PALETTE_NAME is the name to be given to the palette. The .palette extension is appended for you.
— Palettes: MAIN_MODEL_FILE
xxx_MAIN_MODEL_FILE is the name of the main interface file (nib
file) often with a .gorm extension.