HP 3000 Manuals

HP TRANSACT Quick Reference Guide

IF 

     IF condition-clause THEN statement [ELSE statement];

     CONDITION CLAUSE 
     test-variable relational-operator value[,value...][{AND|OR} ...]

     TEST VARIABLES 
     (item-name[(subscript)])
     arithmetic-expression 
     EXCLAMATION  - Status of automatic null response
     FIELD        - Status of the FIELD option
     INPUT        - Last value input to INPUT
     PRINT        - Status of PRINT or TPRINT option
     REPEAT       - Status of REPEAT option
     SORT         - Status of SORT option
     STATUS       - Value of STATUS register

     RELATIONAL OPERATORS 
     =
     <>
     <
     <=
     >
     >=

When test variable is (item-name[(subscript)]) and relational operator is
"=" or "<>", value can be:

     NUMERIC
     ALPHABETIC
     ALPHABETIC-LOWER
     ALPHABETIC-UPPER

Example 

  IF (QTY)>(ONHAND) THEN DISPLAY "Too many ordered!";

MPE/iX 5.0 Documentation