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REPEAT and UNTIL Keywords
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REPEAT
<statement-block>
UNTIL <expression>
Description
A REPEAT statement is a loop that executes at least once. It
executes its enclosed statement before it checks the terminating
expression. If the expression is False, it executes again; if the
expression is True, the REPEAT statement terminates. An expression
that is never True creates an infinite loop.
See also: FOR, Loop statement, Pascal Statement Hierarchy, WHILE