The Outliner is a list that organizes data in the blend-file. i.e. the scene data and also the User Preferences.
View the data in the scene.
Select and deselect objects in the scene.
Hide or show an object in the scene.
Enable or disable selection (to make an object „unselectable“ in the 3D View).
Enable or disable the rendering of an object.
Delete objects from the scene.
Unlink data (equivalent to pressing the X button next to the name of a data-block).
Easily select which render layer to render.
Easily select which render pass to render (for example, you can choose to render just the Specular pass).
Each row in the Outliner shows a data-block. You can click the plus sign to the left of a name to expand the current data-block and see what other data-blocks it contains.
You can select data-blocks in the Outliner, but this will not necessarily select the data-block in the scene. To select the data-block in the scene, you have to activate it.
Selecting and Activating¶
Single selection does not require any pre-selection: just work directly with LMB (and/or RMB – contextual menu, see below) inside the name/icon area.
When you select an object in the list this way, it is selected and becomes the active object in all other 3D Views.
Activating a Data-block¶
To „activate“ the data-block with LMB on the icon of the data-block. Activating the data-block will automatically switch to the relevant mode. For example, activating the mesh data of the cube will select the cube and enter Edit Mode while activating the object data of the cube will select the cube and enter Object Mode (see right).
Selecting a Group of Data-blocks¶
Useful when you want to select/deselect a whole bunch of data-blocks. For this you must prepare the selection using, to your liking:
RMB or LMB,
Shift-RMB or Shift-LMB,
RMB and drag or LMB and drag,
all outside the name/icon area. Those pre-selected have their line in a lighter color. You then can (de)select them with an RMB-click on the name/icon area, which brings on a context menu (see below). A to select/deselect all open items.
The three following toggles, in the right side of the Outliner editor, are available for objects, modifiers and constraints. When holding Ctrl all its child objects are affected as well.
- Visibility (eye icon)
Toggles the visibility of the object in the 3D View. V will toggle this property for any objects that are selected in the Outliner.
- Selectability (mouse cursor icon)
This is useful for if you have placed something in the scene and do not want to accidentally select it when working on something else. S will toggle this property for any objects that are selected in the Outliner.
- Rendering (camera icon)
This will still keep the object visible in the scene, but it will be ignored by the renderer. R will toggle this property for any objects that are selected in the Outliner.
The editors header has a select menu that let you filter what the Outliner should show. It helps to narrow the list of objects so that you can find things quickly and easily.
- All Scenes
Shows everything the Outliner can display (in all scenes, all layers, etc.).
- Current Scene
Shows everything in the current scene.
- Visible Layers
Shows everything on the visible (currently selected) layers in the current scene. Use the layer buttons to make objects on a layer visible in the 3D View.
Lists the object(s) that are currently selected in the 3D View. See selecting in the 3D View for more information.
Lists only the active (often last selected) object.
- Same Types
Lists only those objects in the current scene that are of the same types as those selected in the 3D View.
Lists only Groups and their members.
- Blender File
Lists all data in the current blend-file.
Lists every data-block along with any properties that they might have.
- User Preferences
Lists options that can be found in the User Preferences along with some other settings.
- Orphan Data
Lists data-blocks which are unused and/or will be lost when the file is reloaded. It includes data-blocks which have only a fake user. You can add/remove Fake User by clicking on cross/tick icon in the right side of the Outliner editor.
- Purge All
Remove all unused data-blocks from the file (cannot be undone).
You can search the view for data-blocks, by using Search field in the header of the Outliner, The Search menu lets you toggle the following options:
Case Sensitive Matches Only
Complete Matches Only