|R1||Pointer to 10-byte block|
The purpose of this call is to define a pointer shape.
This OS_Word defines a pointer shape, which may be selected with OS_Byte 106. Pointers are always defined in 2 bits per pixels, colour 0 is transparent. The shape data is given from top to bottom, with bits 0,1 in each byte giving the left most pixel. Mouse colours can be set with VDU 19.