1. On the QuickCalc Variables title bar, click the New Variable button.
2. In the Variable Definition dialog box, under Variable Type, select Constant or Function.
3. In the Variable Definition dialog box, under Variable Properties Name, enter a name
   for the variable. Variable names cannot contain spaces or special characters.
   NOTE: When referencing this variable from the Input box, the variable name must begin with
   the dollar sign ($) to differentiate it from local AutoLISP variables.

4. Under Variable Properties Group With, click New.
5. In the Category Definition dialog box, under Category Properties Name, enter a name
   for the new category.
6. Under Description, enter a description for the new category. Click OK.
7. In the Variable Definition dialog box, under Value or Expression, enter a value or
   expression for the new variable.
8. Under Description, enter a description of the new variable. Click OK.

   The new variable is now displayed in the Variables area.

Learning AutoCad