To Create a Mask Block Definition From a Polyline

Use this procedure to create a mask block definition from one or more closed polylines. If you use more than one polyline to create your mask block definition, the polylines must be completely within or completely outside each other: they cannot overlap or touch. Polylines that are within each other can be specified as void areas that become holes when the mask block is created. After you create the definition, edit the definition properties to customize the characteristics of the definition.

  1. Click Manage tabStyle & Display panelStyle Manager.

    The Style Manager is displayed, with the current drawing expanded in the tree view.

  2. Expand Multi-Purpose Objects, right-click Mask Block Definitions, and click New.
  3. Enter a name for the new mask block definition, and press Enter.
  4. Right-click the new mask block definition name, and click Set From.
  5. Select the closed polyline to use to create the mask block definition.
  6. Do one of the following to complete the mask block definition:
    • Press Enter to create the mask block definition from a single polyline.
    • Enter y (Yes) to select additional polylines to add to the mask block definition. These polylines must be entirely within or outside each other; they cannot overlap or touch. Polylines that are within other rings can be specified as void areas that become holes in the mask block.
  7. Specify an insertion base point for the mask block.
  8. Select additional graphics to include in the mask block definition, or press Enter if you do not want to include additional graphics.
    Note: You can select text or symbols to include in the mask block definition.
  9. Click OK.
  10. A mask block definition is created from the polyline or polylines that you selected. The new mask block definition is listed in the mask block definition tree and can be viewed in the graphics screen of Style Manager. The original polylines remain in the drawing.