code/controllers/configuration/entries/admin.dm

/datum/config_entry/flag/mentors_mobname_only	Defines whether or not mentors can see ckeys alongside mobnames.
/datum/config_entry/flag/mentor_legacy_system	Defines whether the server uses the legacy mentor system with mentors.txt or the SQL system.
/datum/config_entry/flag/popup_admin_pm	Gives the ability to send players a maptext popup.