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Dynamic Zone Lists
Dynamic Zone Lists are a special feature of the Project 1999 wiki which displays tables of information at the bottom of each zone page. Those pages include data collected from other pages related to those zones: NPCs, quests, or items from that zone.
How They Work
Because they are based on data from a large number of other pages, the dynamic zone tables are not updated immediately when one of those pages changes. Instead, every (other?) night (day?) the wiki updates all of the dynamic zone tables.
This means you may see a lag when you edit a page, before that edit is reflected in the related zone's table.
How They Break
When the code for the dynamic zone lists comes across some "bad code" in any of the related wiki pages, it can corrupt the entire page's table, breaking it. This situation can be frustrating, because while the table will be obviously broken on the zone page, the cause of the problem could be any of the related wiki pages for that zone's category.
For instance, if the NPCs table on the Halas page broke, it could be from code in the A Sled Dog page, the Brin McQuaid page, or any other page that's in the Category:NPCs and the Category:Halas.
The only way to fix the page is to go through all Halas NPC pages, and check them for recent edits (on their History page). If they have any, check them carefully for code that could be invalid, such as opening brackets without matching closing brackets, or foreign language characters, or anything else out of the ordinary.