Layout

Layout maps button IDs to physical inventory slots. Each row represents an inventory row; spaces are empty slots, a normal single character is a button ID, and a backtick-wrapped value is one logical slot even when its ID has multiple characters.

Type: CHEST
Layout:
  - '#########'
  - '####`shop`####'
  - '#########'

The middle row has 9 logical slots: four empty slots, one shop button, and four empty slots. Buttons.shop must exist; one button ID may occupy multiple slots and will render the same state in each slot.

Rules:

• A chest has 9 columns and 1-6 rows; hoppers have 5 slots; dispensers and droppers are 3 x 3; furnace-class inventories and anvils have 3 slots.
• Invalid row or slot counts prevent the menu from opening rather than rendering an incomplete inventory.
• Button IDs should use letters, numbers, _, -, and /; multi-character IDs must use backticks.
• Do not put a Dialog Bottom matrix into Container Layout; Container buttons are arranged by inventory slots.

See Buttons for button definitions and Type for inventory limits.