If the Sticky flag is set on a folder, only the owner and root can delete or rename files. Otherwise everybody with write permissions can do this.
At de flagge "Plakkerich" oanstiet op in map, dan kinne allinnich de eigner en de haadgebrûker triemen fuortsmite of nammen feroarje. oars kin elts dy' t skriuwrjochten hat dit dwaan.