WHILE(condition) (instructions) END
Executes a series of instructions while the specified condition is true. Unlike the DO...UNTIL instruction, the instructions will never be executed if the condition is false. The test on the condition is carried out before the instructions contained in the loop are executed for the first time.
// To count up to 10 a = 0 WHILE (a < 10) a = a + 1 PRINT a END