Creating alternates
You can create an alternate version of your current wireframe from the Wireframe menu in the Top Bar or from the context menu in the Navigator panel.
This will create a copy of the current wireframe as an alternate version for you to modify. By default, it will automatically be named with the word "Alternate" followed by some random numbers and letters to ensure that the name is unique.
Note: You can create an alternate of an alternate by having the alternate selected (active).
When an alternate exists, an icon will appear next to the name in the Navigator panel indicating that there are alternates. When you are working on an alternate version, the Navigator panel will display the alternate name in parentheses.
To rename the alternate, you can use the context menu in the Navigator panel or the Wireframe Menu.