The Xen'drik Expeditions living, organized campaign featured standard "core" scenarios as well as four major factions. Player characters could join only one faction. Each faction had a series of adventures that were playable only by characters belonging to the faction. Generally, factions worked against each other in the overall campaign.
Various prefixes are commonly used for these scenarios, including CVN, COL, and COV. None appear to have been formally correct, or even used during the play program. The use of CVN is here adopted a standard merely so the scenarios sort properly.