Variable formula editor
This is the variable formula editor dialog box:
In this dialog box you can edit the formula for the variable.
E.g. if you have a variable named HEIGHT containing the height of patients in meters, and you have another variable WEIGHT containing the weight of patients in kilograms, then you can complete the dialog box as follows to obtain a new variable containing the Body Mass Index.
When entering the formula, you can select variables and functions from the respective lists shown in the dialog box.