| DRAFT DICTIONARY CBF/imgCIF Extensions Dictionary | Draft version 1.5 for comment | 
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Definition:
        The setting of the specified axis in degrees for the first
               data point of the array index with the corresponding value
               of _array_structure_list.axis_set_id.  If the index is
               specified as 'increasing', this will be the centre of the
               pixel with index value 1.  If the index is specified as
               'decreasing', this will be the centre of the pixel with
               maximum index value.
Type: float
Mandatory item: no
Category: array_structure_list_axis
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