code/controllers/subsystem/overlays.dm
| /proc/overlays2text | Converts an overlay list into text for debug printing Of note: overlays aren't actually mutable appearances, they're just appearances Don't have access to that type tho, so this is the best you're gonna get |
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| /proc/remove_non_canon_overlays | Recursively removes overlays that do not render to the game plane from an appearance. |