Generally

Program Variables are similar to Project and Worksheet variables, except they are 'predefined' within the Program, and can be used in any Project.

The Program variables available are listed in the Table below.

VARIABLE NAME	IT'S VALUE
Q	The value in the 'QTY' column of the PARENT Worksheet
DJC	The value in the Project Summary (Project Window) in the 'COST' column on the line containing 'DJC' as the last characters in the 'CO' column e.g "**DJC"
IJC	The value in the Project Summary (Project Window) in the 'COST' column on the line containing 'IJC' as the last characters in the 'CO' column e.g "#*IJC"

Application

Just like Project and Worksheet variables, you apply Program Variables by enclosing the variable name within "{}". e.g. {IJC}.
When they are encountered, they are replaced in their visible/printed view by their calculated value.