code/modules/maptext/_maptext_manager.dm 
| /atom/movable/maptext_manager | Maptext manager atom/movables govern displaying maptext over single parent atom. To this end, they track the outermost movable
of the parent atom, and relocate to the outermost loc if possible. To display maptext to a client, the list of maptext holders
indexed by their associated clients is queried for the maptext holder associated with that client, and instructed to add a line. |
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