Layout uses obstacles to restrict where components and tracks can be placed on a board. The most common types of obstacles are:

· Board outlines

· Copper pour

· Insertion outlines

· Place outlines

You can use the obstacle tool to create, edit, and place obstacles on your board. You can use the Edit Obstacle dialog box to choose the type of obstacle you want to create, and to set properties for the obstacle, such as size, target layer, and net attachment. Obstacles are used on the board and in the footprint library. Because Layout remembers the physical properties of the last obstacle you created, you can easily create one or more similar obstacles in succession, including net and component properties, but of varying sizes.