Minecraft wiki entry for Structure, associated text: 1 Materials
1.1 All Versions/Snapshot except all snapshot from 21w05a to 21w16a
1.2 21w05a - 21w16a Snapshot
2 Blueprint
2.1 All Versions/Snapshot except all snapshot from 21w05a to 21w16a
2.2 21w05a - 21w16a Snapshot