| DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment | 
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Definition:
       The value of  _axis.system specifies the coordinate
              system used to define the axis: 'laboratory', 'direct', 
              'orthogonal', 'reciprocal' or 'abstract'.
Type: ucode
Mandatory item: no
| laboratory | the axis is referenced to the imgCIF standard laboratory Cartesian coordinate system | 
| direct | the axis is referenced to the direct lattice | 
| orthogonal | the axis is referenced to the cell Cartesian orthogonal coordinates | 
| reciprocal | the axis is referenced to the reciprocal lattice | 
| abstract | the axis is referenced to abstract Cartesian cooridinate system | 
Category: axis
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