Hierarchy

The Hierarchy panel in the upper-left corner lists every object of the current scene as a tree, and it is where objects are created, selected, renamed, re-parented and deleted.

The object tree

The root of the tree is the Canvas — the scene itself — and every other object is a child (or grandchild) of the Canvas:

• hiding a parent hides its children as well;
• the position of a child is relative to its parent, so moving a parent moves its children with it;
• the order in the tree is the drawing order: objects further down (deeper in the tree) are drawn on top, which means a deeper object covers a shallower one.

Toolbar

Control	What it does
Add	Opens the object type menu: shapes, UI, effects, animation, world.
Expand / Collapse all	Opens or closes the selected tree branches at once.
Search	Searches by object name or UUID.
Detach	Floats the panel in its own window; click the button again or close the window to dock it back.

Common actions

• Add an object — click the Add button, or right-click in the tree and pick an entry from the Add menu. The new object is created under the selected object; select Canvas to add it to the scene directly.
• Select — click an object; Ctrl + click selects several. The Inspector and the Scene window follow the selection.
• Rename — double-click the name, right-click → Rename, or edit the Name row in the Inspector.
• Re-parent — drag an object onto another object to move it into that object’s branch of the tree.
• Delete — select the object and press Delete, or right-click → Delete.
• Cut / Copy / Paste / Duplicate — from the context menu, or with Ctrl + X, Ctrl + C, Ctrl + V.

Copy Path / Name / UUID

Right-click an object and open the Copy Path | Name | UUID submenu to put an identifier of the object on the clipboard. Scripts need them to look an object up, for example get_object_by_path('Canvas/Player') or get_object_by_uuid('<the UUID goes here>').