The Function Definition part of the Program Editor allows you define four types of information:
Functions and Macros Set up a function for inclusion in formulas. This can help simplify formulas
Constants Define a number as a named constant. This can help to improve the readability of your formulas. The use of constants also means that if a value is changed that is used in many programs, you need only change one value
External C Functions If you write your own operators (C Exits), and wish to call them from within a QA Build formula, you will need to define the name of the function, and the parameter types expected by the function
Word Strings Word strings are useful for displaying messages in multi lingual applications