A (possibly incomplete :-) list of actions that may be used in scripts.

A

B

C

D

Draw image

E

Erase image

F

G

Graphics: draw, move, erase

H

I

Image: draw, move, erase

J

K

L

M

Move image

N

O

P

Pictures: draw, move, erase

Q

R

S

T

U

V

W

X

A

Z

If there are noy omissions from the above, extremely thorough list, then please feel free to email me suitable pages to insert here.