code/controllers/subsystem/SSair.dm 
| /datum/resumable_cost_counter | A cost counter for resumable, repeating processes. |
|---|---|
| /datum/milla_safe | Create a subclass of this and implement on_run to manipulate tile air safely. |
| /datum/milla_safe_must_sleep | Create a subclass of this and implement on_run to manipulate tile air safely. ONLY USE THIS VERSION IF YOU CAN'T AVOID SLEEPING; it will delay atmos ticks! |