https://github.com/rathena/rathena/blob/master/npc/quests/quests_rachel.txt
//===== rAthena Script =======================================
//= Rachel Quests
//===== By: ==================================================
//= L0ne_W0lf
//===== Current Version: =====================================
//= 3.6
//===== Compatible With: =====================================
//= rAthena Project
//===== Description: =========================================
//= Collection of Rachel Quests
//= Lost Child Quest:
//= - End of quest coincides with opening the Sanctuary.
//= - Variable in use: lost_boy (max 13)
//= Bruspetti Quest:
//= - [Official Conversion]
//= - Requires friendship quest as a prerequisite.
//= - Variable in use: rach_vice (max 24)
//= Ice Necklace Quest:
//= - iRO uses a different sprite for Urstia, and no cutins.
//= - Variable in use: ice_necklace_q (max 7)
//= Sanctuary Quest:
//= - Actually two quests in one. Donation and dungeon quest.
//= - Requires 10000 donations before players can start the quest.
//= - Variable in use: ra_tem_q (max 23) (unset at end)
//= - Variable in use: Once completed MISC_QUEST bit 8192 is set
//= - Variable in use: ra_have_donated (0 no/1 yes)
//= - Variable in use: $rachel_donate (max 10000)
//===== Additional Comments: =================================
//= 3.0 Large reordering of Zhed, and Peace to the Arunafeltz addition. [L0ne_W0lf]
//= Some more numeric conversion, and some other cleanup.
//= 3.1 Updated Ice Necklace quest, added missing checks. [L0ne_W0lf]
//= 3.2 Added missing updates for Peace to the Arunafeltz quest. [L0ne_W0lf]
//= 3.3 Fixed occurance of PcName. [L0ne_W0lf]
//= Fixed level 4 ID warps always being usable.
//= 3.3a Fixed level 4 ID warps again. (Bugreport:4102) [L0ne_W0lf]
//= 3.4 Added quest log entries for:
//= - Ice Necklace Quest
//= - Thor Volcano Base Quest addition.
//= 3.5 Updated RE/Pre-RE EXP. [Euphy]
//= 3.6 Added questlog support. [Euphy]
//============================================================
// Lost Child Quest (Prerequisite to High Priest quest) :: rachel_wonjumin
//============================================================