**CIGAL Reference Manual, Chapter 2 (Commands): WHILE**
===== WHILE -- Execute a conditional loop of commands =====
**usage:  while(expression) {...}**

The WHILE command is like the IF command in that the group of commands within the pair of
brackets ('{' and '}') following the WHILE statement are executed only if the EXPRESSION
results in a non-zero value.  WHILE is different from IF, however, in that when the
program reaches the '}' it jumps back to the WHILE statement.

Use WHILE loops within macro or menu command file, or use it interactively. If you enter a
WHILE command at the keyboard, the command line interpreter will ask you to enter all
commands within the loop before the WHILE begins execution.

**See Also:**\\
[[jvs:cigal:manual:chapter2:break|BREAK(2)]], 
[[jvs:cigal:manual:chapter2:if|IF(2)]], 
[[jvs:cigal:manual:chapter2:next|NEXT(2)]], 
[[jvs:cigal:manual:chapter2:repeat|REPEAT(2)]]

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