Each model window has a pop-up menu that includes Navigation and Anchors options, as shown in Figure 4.7. These two options are described in the sections Navigation and Managing Anchors. As described in the section Building a Model, the model pop-up menu can also contain the Undo Block Insertion, Redo Block Insertion, Undo Link Connection, Redo Link Connection, and Undo Block Deletion options. If a block or compound block has been copied to the clipboard, then the Paste option is also available on the Model window pop-up menu. For more information about copying blocks see Chapter 6: Blocks.