GRID Example
10 CLEAR SCREEN
20 GRID
30 New
40 GRID 20
50 New
60 GRID 20,10
70 New
80 GRID 10,20,20
90 New
100 GRID 20,10,20,10
110 New
120 GRID 10,10,10,10,20
130 New
140 GRID 20,20,10,10,20,20
150 New
160 GRID 10,20,10,20,10,20,10
170 END
180 SUB New
190 WAIT 1.5
200 CLEAR SCREEN
210 SUBEND
