Tv Preserve
From TVPaintWiki
<<<George<<<Command Reference<<<<Drawing Functions
Version 9.5
tv_Preserve channel
Version 10.0
tv_Preserve Alpha [On|Off|Toggle](layer preserve transparency)
Enables or disables the protection of the specified channel. The channel arguments can be Alpha, Red, Green, Blue or None. None argument disable all the channels protection. It returns a string with the current enable channel(s) (Alpha, Red, Green, Blue or None).