Opens the Categories Lister, which let you organize multiple layers into groups called categories. This is useful if you often apply specific commands to one or more modeling layers.
As a category, it is easier to select and apply these commands to one or layers at the same time.
You can also open the Categories Lister from the Object Lister by right-clicking a layer folder or layer, and then selection Set Category > Open Categories Editor.

Category Editor icon bar
These options are also available from the More menu and by right-clicking a category and selecting them from the context-menu.
- New Category - Creates a new empty category if the Default construction layer is selected. If a layer or object is selected, a new category is created containing the selected layers.
- Duplicate - Duplicates the selected objects, Layers and Layer Folders. When a layer is selected all of its contents are also duplicated. (Also available in the More and context menus.)
- Delete - Deletes the selected category. (Also available in the More and context menus.)
- Isolate - Shows only the layers and objects of the currently selected category.(Also available in the More menu.)
- Show All - Show all the layers and objects
- Pick Layers - Picks the layers contained by the selected category. (Also available in the More menu.)
- More - Access the More menu.
Categories Lister Workflows