code/modules/mapping/preloader.dm 
| /datum/map_preloader | Preloader datum |
|---|---|
| /area/template_noop | Template noop (no operation) is used to skip a turf or area when the template is loaded this allows for template transparency ex. if a ship has gaps in its design, you would use template_noop to fill these in so that when the ship moves z-level, any tiles these gaps land on will not be deleted and replaced with the ships (empty) tiles |
| /turf/template_noop | See above explanation |