Update Quest Variables Documentation

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diff --git a/doc/quest_variables.md b/doc/quest_variables.md
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+# Quest Variables
+
+<!--
+## Copyright
+> This file is part of Hercules.
+> http://herc.ws - http://github.com/HerculesWS/Hercules
+> 
+> Copyright (C) 2012-2018 Hercules Dev Team
+> Copyright (C) Athena Dev Teams
+> 
+> Hercules is free software: you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation, either version 3 of the License, or (at your option) any later version.
+> 
+> This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. 
+> See the GNU General Public License for more details.
+>
+> You should have received a copy of the GNU General Public License along with this program.  
+> If not, see <http://www.gnu.org/licenses/>.
+-->
+
+## Description
+This file should help to understand and manage bit-wise quest variables. 
+You can store up to 31 boolean value into a single variable.
+
+## Sample Variable: `MISC_QUEST`
+
+Quest # No    | Sample Quest
+:-------------| :------------
+Description   | How to assign a bit-wise value and check it.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| X;```
+Check Value   | ```if (MISC_QUEST & X) { ...  }```
+
+- Where `X` refer to the bit-wise value that could be used to represent the state/progress of a quest.
+
+--------------------------------------------------------------
+
+## Example
+
+Quest # 1     | Juice Maker Quest
+:-------------| :------------
+Description   | How to make juices. This bit keeps final state of the quest.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 1;```
+Check Value   | ```if (MISC_QUEST & 1) { ...  }```
+
+Quest # 2     | Tempestra Quest
+:-------------| :------------
+Description   | Determines if player has given a potion to Tempestra.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 2;```
+Check Value   | ```if (MISC_QUEST & 2) { ...  }```
+
+Quest # 3     | Morgenstein Quest
+:-------------| :------------
+Description   | How to make Mixture & Counteragent. This bit keeps final state of the quest.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 4;```
+Check Value   | ```if (MISC_QUEST & 4) { ...  }```
+
+Quest # 4     | Prontera Culvert Quest
+:-------------| :------------
+Description   | Determines if player can enter Prontera Culverts.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 8;```
+Check Value   | ```if (MISC_QUEST & 8) { ...  }```
+
+Quest # 5     | Edgar's Offer
+:-------------| :------------
+Description   | Cheap ticket from Izlude to Alberta. This bit keeps final state of the quest.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 16;```
+Check Value   | ```if (MISC_QUEST & 16) { ...  }```
+
+Quest # 6     | Piano Quest
+:-------------| :------------
+Description   | The only way from Niflheim to Umbala.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 32;```
+Check Value   | ```if (MISC_QUEST & 32) { ...  }```
+
+Quest # 7     | Bio Ethics Quest
+:-------------| :------------
+Description   | Quest for homunculus skill for alchemists. This bit keeps final state of the quest.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 64;```
+Check Value   | ```if (MISC_QUEST & 64) { ...  }```
+
+Quest # 8     | DTS Warper
+:-------------| :------------
+Description   | Determines if player has already voted.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 128;```
+Check Value   | ```if (MISC_QUEST & 128) { ...  }```
+
+Quest # 9     | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 256;```
+Check Value   | ```if (MISC_QUEST & 256) { ...  }```
+
+Quest # 10    | Cube Room
+:-------------| :------------
+Description   | Lighthalzen Cube Room quest (to enter Bio-Lab)
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 512;```
+Check Value   | ```if (MISC_QUEST & 512) { ...  }```
+
+Quest # 11    | Reset Skills Event
+:-------------| :------------
+Description   | Yuno, Hypnotist Teacher
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 1024;```
+Check Value   | ```if (MISC_QUEST & 1024) { ...  }```
+
+Quest # 12    | Slotted Arm Guard Quest
+:-------------| :------------
+Description   | Ninja Job Room, Boshuu
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 2048;```
+Check Value   | ```if (MISC_QUEST & 2048) { ...  }```
+
+Quest # 13    | Improved Arm Guard Quest
+:-------------| :------------
+Description   | Ninja Job Room, Basshu
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 4096;```
+Check Value   | ```if (MISC_QUEST & 4096) { ...  }```
+
+Quest # 14    | Rachel Sanctuary Quest
+:-------------| :------------
+Description   | Determines if player can access Rachel Santuary.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 8192;```
+Check Value   | ```if (MISC_QUEST & 8192) { ...  }```
+
+Quest # 15    | Message Delivery Quest
+:-------------| :------------
+Description   | Send a message to Elly, in Niflheim from Erious.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 16384;```
+Check Value   | ```if (MISC_QUEST & 16384) { ...  }```
+
+Quest # 16    | Umbala Domestic Dispute?
+:-------------| :------------
+Description   | Reward: 1 Yggdrasil Leaf.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 32768;```
+Check Value   | ```if (MISC_QUEST & 32768) { ...  }```
+
+Quest # 17    | Access to the Turtle Island
+:-------------| :------------
+Description   | Reward: ~1 Old Card Album , Old Violet Box, GB.
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 65536;```
+Check Value   | ```if (MISC_QUEST & 65536) { ...  }```
+
+Quest # 18    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 131072;```
+Check Value   | ```if (MISC_QUEST & 131072) { ...  }```
+
+Quest # 19    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 262144;```
+Check Value   | ```if (MISC_QUEST & 262144) { ...  }```
+
+Quest # 20    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 524288;```
+Check Value   | ```if (MISC_QUEST & 524288) { ...  }```
+
+Quest # 21    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 1048576;```
+Check Value   | ```if (MISC_QUEST & 1048576) { ...  }```
+
+Quest # 22    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 2097152;```
+Check Value   | ```if (MISC_QUEST & 2097152) { ...  }```
+
+Quest # 23    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 4194304;```
+Check Value   | ```if (MISC_QUEST & 4194304) { ...  }```
+
+Quest # 24    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 8388608;```
+Check Value   | ```if (MISC_QUEST & 8388608) { ...  }```
+
+Quest # 25    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 16777216;```
+Check Value   | ```if (MISC_QUEST & 16777216) { ...  }```
+
+Quest # 26    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 33554432;```
+Check Value   | ```if (MISC_QUEST & 33554432) { ...  }```
+
+Quest # 27    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 67108864;```
+Check Value   | ```if (MISC_QUEST & 67108864) { ...  }```
+
+Quest # 28    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 134217728;```
+Check Value   | ```if (MISC_QUEST & 134217728) { ...  }```
+
+Quest # 29    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 268435456;```
+Check Value   | ```if (MISC_QUEST & 268435456) { ...  }```
+
+Quest # 30    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 536870912;```
+Check Value   | ```if (MISC_QUEST & 536870912) { ...  }```
+
+Quest # 31    | -
+:-------------| :------------
+Description   | -
+Assign Value  | ```MISC_QUEST = MISC_QUEST \| 1073741824;```
+Check Value   | ```if (MISC_QUEST & 1073741824) { ...  }```
+
+### Quest#32 and onwards
+You had to use a new variable to store it.
+The existing variable `MISC_QUEST`'s value may overflow as it already reaching the max value.
+Basically the cycle repeat every 32th quests, unless the limit has been lifted in the future.
+
+ No | Formulae    | Bits Value | Accumulate
+:--:|:-----------:|-----------:|-------------: 
+  1 |   2 ^  0    |          1 |           1
+  2 |   2 ^  1    |          2 |           3
+  3 |   2 ^  2    |          4 |           7
+  4 |   2 ^  3    |          8 |          15
+  5 |   2 ^  4    |         16 |          31
+  6 |   2 ^  5    |         32 |          63
+  7 |   2 ^  6    |         64 |         127
+  8 |   2 ^  7    |        128 |         255
+  9 |   2 ^  8    |        256 |         511
+ 10 |   2 ^  9    |        512 |        1023
+ 11 |   2 ^ 10    |       1024 |        2047
+ 12 |   2 ^ 11    |       2048 |        4095
+ 13 |   2 ^ 12    |       4096 |        8191
+ 14 |   2 ^ 13    |       8192 |       16383
+ 15 |   2 ^ 14    |      16384 |       32767
+ 16 |   2 ^ 15    |      32768 |       65535
+ 17 |   2 ^ 16    |      65536 |      131071
+ 18 |   2 ^ 17    |     131072 |      262143
+ 19 |   2 ^ 18    |     262144 |      524287
+ 20 |   2 ^ 19    |     524288 |     1048575
+ 21 |   2 ^ 20    |    1048576 |     2097151
+ 22 |   2 ^ 21    |    2097152 |     4194303
+ 23 |   2 ^ 22    |    4194304 |     8388607
+ 24 |   2 ^ 23    |    8388608 |    16777215
+ 25 |   2 ^ 24    |   16777216 |    33554431
+ 26 |   2 ^ 25    |   33554432 |    67108863
+ 27 |   2 ^ 26    |   67108864 |   134217727
+ 28 |   2 ^ 27    |  134217728 |   268435455
+ 29 |   2 ^ 28    |  268435456 |   536870911
+ 30 |   2 ^ 29    |  536870912 |  1073741823
+ 31 |   2 ^ 30    | 1073741824 |  2147483647 
+
diff --git a/doc/quest_variables.txt b/doc/quest_variables.txt
deleted file mode 100644
index 0be144183..000000000
--- a/doc/quest_variables.txt
+++ /dev/null
@@ -1,108 +0,0 @@
-//===== Hercules Documentation ===============================
-//= Permanent Quest Variables
-//===== By: ==================================================
-//= Lupus
-//===== Current Version: =====================================
-//= 20120826
-//===== Description: =========================================
-//= This file should help to understand and manage bit-wise 
-//= quest variables. You can store up to 31 boolean value into 
-//= a single variable.
-//============================================================
-
-Variable: MISC_QUEST
---------------------------------------------------------------
-
-Quest:		Juice Maker Quest
-Info:		How to make juices. This bit keeps final state of the quest.
-How to set:	set MISC_QUEST, MISC_QUEST | 1;
-How to check:	if (MISC_QUEST & 1) {}
-
-Quest:		Tempestra Quest
-Info:		Determines if player has given a potion to Tempestra.
-How to set:	set MISC_QUEST, MISC_QUEST | 2;
-How to check:	if (MISC_QUEST & 2) {}
-
-Quest:		Morgenstein Quest
-Info:		How to make Mixture & Counteragent. This bit keeps final state of the quest.
-How to set:	set MISC_QUEST, MISC_QUEST | 4;
-How to check:	if (MISC_QUEST & 4) {}
-
-Quest:		Prontera Culvert Quest
-Info:		Determines if player can enter Prontera Culverts.
-How to set:	set MISC_QUEST, MISC_QUEST | 8;
-How to check:	if (MISC_QUEST & 8) {}
-
-Quest:		Edgar's Offer
-Info:		Cheap ticket from Izlude to Alberta. This bit keeps final state of the quest.
-How to set:	set MISC_QUEST, MISC_QUEST | 16;
-How to check:	if (MISC_QUEST & 16) {}
-
-Quest:		Piano Quest
-Info:		The only way from Niflheim to Umbala.
-How to set:	set MISC_QUEST, MISC_QUEST | 32;
-How to check:	if (MISC_QUEST & 32) {}
-
-Quest:		Bio Ethics Quest
-Info:		Quest for homunculus skill for alchemists. This bit keeps final state of the quest.
-How to set:	set MISC_QUEST, MISC_QUEST|64;
-How to check:	if (MISC_QUEST & 64) {}
-
-Quest:		DTS Warper
-Info:		Determines if player has already voted.
-How to set:	set MISC_QUEST, MISC_QUEST|128;
-How to check:	if (MISC_QUEST & 128) {}
-
-Quest:		-
-Info:		-
-How to set:	set MISC_QUEST, MISC_QUEST | 256;
-How to check:	if (MISC_QUEST & 256) {}
-
-Quest:		Cube Room
-Info:		Lighthalzen Cube Room quest (to enter Bio-Lab)
-How to set:	set MISC_QUEST, MISC_QUEST | 512;
-How to check:	if (MISC_QUEST & 512) {}
-
-Quest:		Reset Skills Event
-Info:		Yuno, Hypnotist Teacher
-How to set:	set MISC_QUEST, MISC_QUEST | 1024;
-How to check:	if (MISC_QUEST & 1024) {}
-
-Quest:		Slotted Arm Guard Quest
-Info:		Ninja Job Room, Boshuu
-How to set:	set MISC_QUEST, MISC_QUEST | 2048;
-How to check:	if (MISC_QUEST & 2048) {}
-
-Quest:		Improved Arm Guard Quest
-Info:		Ninja Job Room, Basshu
-How to set:	set MISC_QUEST, MISC_QUEST | 4096;
-How to check:	if (MISC_QUEST & 4096) {}
-
-Quest:		Rachel Sanctuary Quest
-Info:		Determines if player can access Rachel Santuary.
-How to set:	set MISC_QUEST, MISC_QUEST | 8192;
-How to check:	if (MISC_QUEST & 8192) {}
-
-Quest:		Message Delivery Quest
-Info:		Send a message to Elly, in Niflheim from Erious.
-How to set:	set MISC_QUEST, MISC_QUEST | 16384;
-How to check:	if (MISC_QUEST & 16384) {}
-
-Quest:		Umbala Domestic Dispute?
-Info:		Reward: 1 Yggdrasil Leaf.
-How to set:	set MISC_QUEST, MISC_QUEST | 32768;
-How to check:	if (MISC_QUEST & 32768) {}
-
-Quest:		Access to the Turtle Island
-Info:		Reward: ~1 OCA, OVB, GB.
-How to set:	set MISC_QUEST, MISC_QUEST | 65536;
-How to check:	if (MISC_QUEST & 65536) {}
-
-
-Variable: MISC_QUEST2
---------------------------------------------------------------
-
-Quest:		-
-Info:		-
-How to set:	set MISC_QUEST2, MISC_QUEST2 | ?;
-How to check:	if (MISC_QUEST2 & ?) {}