I didn't know what those numbers were, just that they were incorrectly set as name_1, which is the outdated version of "Altname"

I was just updating outdated tags

By the way, if you press q in ID, it will automatically square the corners of the buildings you created, which makes them look nicer and is often more accurate. :)
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Published using OSMCha: https://osmcha.org/changesets/186988615

The wood tags for them were correct though.. the land use was forested. Welsh mountain nature preserve and city of Lancaster open space are both completely forested.