How do I determine a marker Status in Nexus?

When creating or modifying a template you will notice each marker has a Status property.  The Status of a marker is set to either Required, Optional or Calibration Only.  A marker status can affect the way a template reconstructs and labels. 

Required: A required marker will need to be on the subject during the calibration trial as well as all dynamic trials

Calibration Only: These markers are used during the calibration trial and are then removed from the marker list for the dynamic trials.

Optional: If an optional marker is on the subject for calibration, Nexus will expect that marker to remain on the subject during all the dynamic trials.  If the marker is not present during calibration, the optional marker is removed from the marker list.

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