The SUBJECT Group
This parameter group has been in use by several C3D applications from The National Institutes of Health (NIH) in Bethesda, MD for a number of years. It stores various parameters that contain specific anthropometrical information relating to the subject information stored in the C3D file. It should not be confused with the similarly named SUBJECTS groups used by other software applications.
As a rule, it is a good idea to try to keep group names unique when they store different types of data. It is also recommended that the first six characters of a group or parameter names should be unique for compatibility with older FORTRAN applications that only looked at the first six characters of the name during a search of the parameter section. In general, it is a good idea to try to use an existing group name if one exists that describes the parameters that you want to save.
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DIST_RADIUS