AMOSi:No Mask

an example can be found on AMOSPro_Examples:Examples/H-2/Help_26.AMOS

Removes the blitter mask around one or all bobs. Without a mask, the Bob's entire image will be displayed on screen, including any transparent bits in colour zero.

No Mask : Rem Removes ALL blitter masks
No Mask object : Rem Kills the mask around the selected bob