====== Trim by Polygon ======
{{:cadtabmanipulate68.png?nolink|}}\\
This option allows the user to draw a shape and trim the surface to that shape keeping the inside or outside of the surface.\\

The **Curve Editor** window will be displayed and the user will have options on how to draw the trimming window. To draw a window free hand, like in the example below, select the **Build** option. Once the window is created select **Close** on the **Curve Editor** window to close the window and click on the **OK** button. The **Selection** window will open once the previous step is completed. \\
{{:cadtabmanipulate69.png?nolink|}}{{:cadtabmanipulate70.png?nolink|}}\\
The user will decide to trim either the inside or outside.\\
**Trim Inside** – this will trim away any surface from the inside of the window.\\
**Trim Outside** – this will trim away any surface on the outside of the window. \\

Once the option has been selected and confirmed, the **Selection** window will open. The user must select the surfaces to trim. Once the surfaces are selected click the **OK** button.
Examples are shown below.\\

{{:cadtabmanipulate71.png?nolink|}}Original Surface\\
{{:cadtabmanipulate72.png?nolink|}}Trim Inside\\
{{:cadtabmanipulate73.png?nolink|}}Trim Outside\\