.BREAK[1|2|3] [[.IF condition]]
Generates code to terminate a .WHILE or .REPEAT block if condition is true.
BREAK[1|2|3] is optional nesting level to terminate.
.while 1 .break ; break .while 1 .while 2 .break1 ; break .while 1 .while 3 .break2 ; break .while 1 .while 4 .break3 ; break .while 1 .break2 ; break .while 2 .break1 ; break .while 3 .endw .endw .endw .endw