while

WHILE looping

The command WHILE is a looping construct. The format of the command is

WHILE  condition
  commands
WEND  

The loop evaluates the condition and if the condition is true then it executes the commands. If the condition is false then the execution continues after the command WEND.

When the command WEND is reached the execution jumps back to the command WHILE and the looping starts again until the condition becomes false.