CONDITIONAL STATEMENTS AND JUMPS

       Conditional statements manipulate values to give a
    Condition Code.  This code may have six values:

       EQUAL           GREATER THAN         TRUE
       NOT EQUAL       LESS THAN            FALSE

       These values are set by five operators:

?   Compare the values described by the top two descriptors
    on the stack and set the Condition Code appropriately
    (EQUAL, NOT EQUAL, GREATER or LESS).  The two
    descriptors are removed from the stack (but see '"').

T   Set the Condition Code to TRUE (and return from the
    enclosing predicate).

K   Set the Condition Code to FALSE (and return from the
    enclosing predicate).

C   The same as '?' except that the addresses of the items
    described are compared.

    NOTE: The two items compared by '?' will be of
              similar type i.e. string:string,
              integer:integer, integer:real etc.  Hence the
              only type conversions necessary are from
              integer to real, byteinteger to integer etc.

"   As for '?' but indicates that this is the first
    comparison of a double-sided condition and that the
    second descriptor (the middle operand) is to be
    restacked ready for the second comparison.

    e.g.           if A=B=C start

                   @1@2"#4@3?#4



















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