Expression Builder dialog box
PC-DMIS allows you to create and add expressions into the Edit window by typing them or using the interface of the Expression Builder dialog box. The Edit | Expression menu option displays the Expression Builder dialog box.
This dialog box allows you to create an expression and insert it into an editable field. Pressing the F2 key while the cursor is on a field that allows expressions also displays the Expression Builder dialog box.
The Expressions Builder dialog lists all of the types of operators and functions that are available for expressions.
More:
Creating an Expression by Typing
Creating an Expression with the Expression Builder
Checking the Expression for Correctness