help

The editor's Help menu and the dialog it opens. edui.help.open(page) shows one page over the editor:

• start: Getting started, the first things a person does in the editor (add an object, select it, move it, look around and move the view, play, save the scene, build with DotBot, change the layout, find more). Its Help menu entry names moving the view, the first thing a person asks.
• shortcuts: the keyboard shortcuts, read from the live keymap every time the page builds: each control a live input map binds to the keyboard or the mouse, keys and mouse input named the way a person names them (Left Ctrl, Mouse movement, Mouse wheel), a control whose gate waits for the right mouse button held prefixed with that hold, and each command declared on a key no control already answers (edui.help.shortcuts() returns the same rows as data).
• about: the editor and the world it is bound to.

declare puts help.start, help.shortcuts, help.docs (the Docs panel, its search field focused) and help.about in the editor command registry under the help menu. The top bar's Help menu lists every command declared under help, so a world or a panel adds an entry by declaring one there.