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The editor

/novaui editor opens the home screen: Edit a UI, Create a UI or Open a UI (preview / play). Every change is live for everyone and saved to the page file.

Input	What it does
Move the mouse	moves the cursor (it turns into a hand over buttons)
Left click	click. Click an element to select it, click it again to pick it up, click to drop it
Right click	context menu on an element; cancels a drag; closes a popup
Scroll wheel	scroll lists; over a number field it changes the number (sneak = 10x)
W A S D	nudge the selected element 1 px (sprint = 10 px)
Q	close a popup / cancel a drag
F or Ctrl+F	undo (set Minecraft’s “Swap Item With Offhand” key to Z for a real Ctrl+Z)
Shift+F	redo (Shift+Z with the Z binding)

• Typing (texts, names, colours) opens a small dialog box.
• The top bar has File / Edit / Selection / Layer / Window menus, undo, redo and Save.
• The left column has the tools: select, add box / text / image / head / progress bar, fill colour, eyedropper, align, zoom (50% / 100%) and the animation timeline.
• On the right: Properties, Design and Layers (show/hide, select, order).
• Window > Screen matches a 16:10, 21:9 or 4:3 monitor; Window > Cursor speed changes how fast the cursor moves (also editor.cursor-speed in config.yml).
• While editing you are frozen in place, invulnerable, and your inventory is put away. Leaving (File > Exit, /novaui exit, logging out, even a server crash) gives everything back.