pink are basic terms in the game. Items in light green color are referred to as OOC. New fan age entries are in skyblue.
On touching or clicking any of these small icons an additional image pops up.
Apart from some basic information regarding the DRC and its members, Uru Glossary is not dealing with the IC RPG storyline in detail. You may read about those events in the Uru Live or other forums.
ver. May 11, 2021
Some obsolate links have been refreshed or removed, July 29, 2017
Improved mobile and touch-screen support, May 25, 2015
More additional info can be found in the archives of Wiki at openuru.org, The Guild of Archivists, Wikipedia (Myst franchise), Wikipedia (Uru), Guild of Greeters, D'ni Pedia Writers, MYSTlore wiki, Myst wiki, Myst Ages, Uru Obsession, and at other sites as well. Unfortunately, several excellent places have ceased to exist. Bear in mind, however, that usually the more detailed the info the more you are spoiled.Manual of Myst Online - Uru Live at allthingsuru.com (2007, without spoilers)
Visual guide through URU Ages (with a few tips) here