Panels

The hierarchy, inspectors and timelines are docked around the viewport. A click on the handle at a panel's edge opens or closes it, a drag changes its width

Three panels

The viewport sits in the middle, and three panels are docked around it:

• the left panel holds the hierarchy
• the right panel holds the inspectors
• the bottom panel holds the timelines

A right-panel tab with nothing to show is hidden. More - Object properties

Panel handle

Each panel has one handle on its edge:

• a click opens or closes the panel
• a drag changes its size. One movement can pull a closed panel out to any width

The arrow on the handle shows the panel's state. On a closed panel it points one way, on an open panel it is turned half a turn at any width. An arrow turned only part of the way means a drag is in progress

A click opens the panel with an animation, and so do the shortcuts: Ctrl+Left, Ctrl+Right and Ctrl+Down. More - Speed and shortcuts

Width

A panel is either closed or somewhere between its narrowest and its widest width. The narrowest width is also the ordinary one: it is how much room the panel's content needs

The left panel only opens and closes. The rest of the editor is laid out against its width

If you release a drag narrower than the narrowest width, the panel goes to whichever is closer: the closed position or the narrowest width. Exactly halfway, it opens. So one movement still closes a panel

A click opens the panel at the width you last left it open at

Minimize and open on its own

Toggle Minimize Panels closes every open panel and leaves the viewport alone. Pressing it again opens the panels that were open. If none were open, all three open

Auto-Open Right Panel (settings, Game Editor tab, Interface) opens the right panel by itself when you select something. Off by default