When you enter the required inputs and click "calculate" a new window will appear containing the percent stretch, squeeze, and volume fill for the groove you have defined. 

Note that there is an optional input of "backups" that will allow you to take anti-extrusion backups into account.

With this unique tool, iterative design becomes easier since you can tell by looking at the table how the performance of the groove varies with your inputs.  You can leave multiple results windows open for comparison since the window will not close when you submit new inputs.

Finally, once you've decided on a design, you can get the complete documentation by clicking on the "Design Document" link.  A new window will open with text that you can copy and paste into your word processing software.