This can be easier than making the same change layer-by-layer. The buttons in this area of the Layer Editor dialog enable you to change at once the layer protection and visibility status, how shapes are displayed, and the line style used for all layers.
Protection (against selection) of items on layers. You can set attributes layer-by-layer or you can use Global Attributes Control to set the following attributes on all layers at once: To display the Layer Editor, choose Options > Layers or select Edit from the Layout window. Layer definitions are modified through the Layer Editor. Note that it is important that hierarchically related designs use the same layer definitions. (See Saving a Layout Setup.) Using a standard set of layer definitions saves time because you do not have to define the layers each time you create a design. The program provides a default set of layer definitions, but you can define and save your own layer sets. Further, simple text notes and annotation can be placed on layers that are not output for manufacturing at all. For example, power and ground lines are often placed on the same mask for manufacturing, but on a different mask for CAD layout to distinguish them. Often a single process mask layer is represented by a number of layers in a CAD program. However, mask layers can be used for a number of other purposes. Mask layers usually correspond to the masks used in manufacturing a layout. Each layer must have a unique name and number. Layout allows you to define any number of mask layers in a file, and to create any number of mask layer files. Before you begin a layout, be sure that the environment is appropriate for the design, the program options, and the final output required.Īll shapes and text are entered on layers. Layout is shipped with preset options that can be modified on a project- or system-wide basis. This section provides details for setting layout options so that you can create a layout in an environment that is compatible with your design.
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