To set the fill pattern of the graphics screen, use SETPATTERN.
The available fill patterns are:
1  |
2  |
3  |
4  |
5  |
6  |
7  |
8  |
9  |
10  |
11  |
If SETPATTERN is called with a user defined pattern (a list of eight numbers between 0 and 255), PATTERN reports this list.
