The REPEAT statement is a looping statement and executes one  or
  more statements until a specified condition is true.

  Syntax:

     REPEAT
        {statement};...
     UNTIL expression

  The 'statement' is any VSI Pascal statement.

  The 'expression' is any Boolean expression.

  VSI Pascal always executes a REPEAT statement for one iteration;
  iterations  continue as long as the Boolean expression is FALSE.
  When specifying more than one statement as the loop  body  to  a
  REPEAT  statement,  do not enclose the statements with the BEGIN
  and END reserved words; multiple statements  are  legal  in  the
  REPEAT loop body.