SYNTAX            : ;C CONDITION

RESULTING ARGUMENT: 1 (if condition is TRUE)
                    0 (if condition is FALSE)

FUNCTION          : Retest the previous condition (at the same nesting
                    level) and return the result of the comparison.

EXAMPLE           : q0 , q1 ;c LT < :m q0 < q1 ESC >
                            ;c EQ < :m q0 = q1 ESC >
                            ;c GT < :m q0 > q1 ESC >
                    Show how q0 and q1 relate.

NOTE 1            : A previous ;C command must have been executed at the
                    same level of iteration. The values for that test are
                    re-used (usually for testing a different condition).

NOTE 2            : See ;C for details.

NOTE 3            : Values for re-tests are NOT re-evaluated. The re-test is
                    performed with the values <val 1> and <val 2> at the
                    time of the previous test.

MATRIX