Floor sprites missing from tilesets?

cjmarkham

Greenhorn
I'm looking in to the tilesets for the base game, but it appears that some are missing. The inner corners for example don't appear to be in Floors.png

For example, given this set
Screenshot 2025-12-01 at 18.27.07.png
You'd expect a sprite to exist for the second tile on the bottom row, where there's an edge on the bottom and an inner corner top right.
But, this isn't something I see in the tilesheet.
Screenshot 2025-12-01 at 18.28.18.png
Am I missing something? Does the game achieve this in code or using masks or something?
 
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