Complex fill is the tool on the left with the red outline. To digitize a complex fill, select the complex fill tool by left clicking on it, or by right clicking inside the view window and selecting complex fill. Now input the wireframe outline of the complex fill. By inputting straight or curved points. The last point input should end up being close to the first point that you input, then press Enter or Return. This will connect the last point with the first point. Next, if there are any small holes or places that you do not want the fill to cover, digitize a wireframe outline around those just as you did the first outline and press Enter after each one. After you have finished digitizing the complex fill and any holes, press Enter again.
If you have finished a complex fill and decide later that it should contain some empty spaces (holes), you can insert them without having to digitize the fill again. The toolbar button next to the complex fill button (with the black outline and the filled in hole) is the complex hole button. Select your design by right clicking on it, then select the complex hole tool. Now digitize the wireframe outline of the hole and press Enter.
Complex fill automatically terminates after the second direction point is put in.
You can get to complex fill and hole with the tools on the toolbar, through the Insert Menu, or by right clicking in the View Window.
If a point is entered incorrectly, pressing the Backspace key will remove the input points in reverse order.