Fill empty slots
Fill every empty slot of the menu a player has open with one item, like grey glass, as a border.
A Minecraft element (a step) in Menus. Needs the Basic plan or higher to go live; building and testing are free.
Example
When a player uses a command → Open a menu → Slot buttons → Fill empty slots: grey glass.
Also called
fill, border, background, glass, filler
Works as a data pack?
No. This one needs the Elementium plugin on a Paper server.
What you give it
- Player