Minecraft wiki entry for Inventory, associated text: Pocket Edition Creative Inventory on v0.2.1 (Lite).
Pocket Edition Creative Inventory from Alpha 0.8.0 to 0.13.2.
Pocket Edition Creative inventory from v0.14.0 to 1.1.5.
Bedrock Edition Creative Inventory Pocket UI on present.
Windows 10 Edition Creative inventory from 1.0.0 to 1.1.5.
Bedrock Edition Creative inventory Classic UI on present.