Main sections
WHILE
WHILE a%#
WEND
Loops the code in between WHILE and WEND as long as the expression of a%# is unequal 0 (or FALSE).
Sample:
i=0
WHILE i < 5
i=i+1
PRINT i, i*32, 100
WEND
SHOWSCREEN
MOUSEWAIT
Output:
1 2 3 4 5
i=0
WHILE i < 5
i=i+1
PRINT i, i*32, 100
WEND
SHOWSCREEN
MOUSEWAIT