In addition to the other functions I would appreciate a function that returns whether the quest is actually active in the game.
Looping possible quest Ids starting from one to 10000 there are returned many dummy quests by using GetQuestName()

Here are a few examples:

• ID 31, TM01_OUTOFDATE
• ID 63, Simple Kill Quest
• ID 3861, QUEST IO BUG CHECK

Example of my additional request:
* GetQuestObtianable(*integer* _questId_)
** _Returns:_ *boolean* _isObtainable_