HP L 5 manual

The Palette Control command provides a way of managing system memory by deleting palettes in either the stack or store that are no longer in use.

Palette Control that is exercised during macros can have significant impact on palettes that exist within the system. Deleting all palettes, or those on the stack, or the current palette, or all those except on the stack can have adverse effects when the macro is exited. The adverse effect could be the deletion of the desired palette, and replacement with a black and white non-programmable palette.

3-10 Using Palettes EN