How It Works
When a player clicks an item in a GUI, the plugin executes the command assigned to that item.

Example:

msg %player% Hello!

This makes it easy to create shops, teleport menus, server selectors, and other interactive interfaces.

Commands
General
/gui Shows all available commands.

/gui create <GuiName> <Size> Creates a new GUI. Supported sizes: 9, 18, 27, 36, 45, 54.

/gui edit <GuiName> Opens the GUI editor.

/gui title <GuiName> <Title> Changes the GUI title. Colored text is currently not supported.

/gui permission <GuiName> <Permission> Changes the permission required to open the GUI.

/gui setpublic <GuiName> <true/false> Allows all players to open the GUI if set to true.

Management
/gui list Lists all GUIs.

/gui delete <GuiName> Deletes a GUI.

Permissions
/gui giveperm <GuiName> <PlayerName> Grants a player access to a GUI.

/gui removeperm <GuiName> <PlayerName> Removes a player's access to a GUI.

/gui listperms <GuiName> Lists all players with access to a GUI.

Utility
/gui forceopen <GuiName> <PlayerName> Forces a GUI to open for a player.

/gui listcommands <GuiName> <Slot> Lists commands assigned to an item.

/gui removecommand <GuiName> <Slot> <Index> Removes a command from an item.

/gui cancel Cancels pending chat input.

Editing
1. Open the Editor
Run:

/gui edit <GuiName>

2. Place Items
Place the items you want into the desired slots.

3. Rename Items
Hover over an item and press Shift + Left Click.

The GUI will close and ask for a new name in chat. Enter the name and the editor will reopen automatically.

4. Set Commands
Hover over an item and press Shift + Right Click.

The GUI will close and ask for a command in chat.

Do not include a slash (/).

Incorrect:

/tell %player% test

Correct:

tell %player% test

5. Save
Simply close the GUI when you're finished. Changes are saved automatically.