Editing Great Zero marker (section)

=== Great Zero markers (GZMs) ===
Great Zero markers are invisible to anyone who does not have a KI, or who has not properly upgraded their KI to receive marker information. These markers are also invisible unless a properly-upgraded KI is within approximately 15 feet of their location. When in range, they will emit a quiet pulsing tone to aid in their discovery.

These markers are used in the two initial missions distributed to new users by the [[Great Zero marker dispenser]]s located near the Great Zero itself. The missions are color-coded, using small lights around the outer rim of the KI's face: green for the first mission, and red for the second.<ref>[https://web.archive.org/web/20100523084647/http:/www.guildofgreeters.com/index.php?option=com_content&task=view&id=81&Itemid=38 A Guide to Great Zero Marker (GZM’s) Locations], Guild of Greeters website, accessed Feb 8 2020. Archived from the original on May 23, 2010.</ref> Each requires collecting 15 markers, and both draw from the same pool. As markers are collected, they disappear for that KI user, and cannot be collected a second time. Progress is tracked through the lights on the KI, which brighten one at a time. Once a mission is completed, it must be "uploaded" back into the dispenser.

Upon completion of the "green" mission, a link to the [[Great Zero Courtyard]] is added to the person's [[Nexus]]. Completion of the "red" mission enabled the individual to access the [[Great Zero Calibration Chamber]], and the calibration marker missions contained within.