struct PK_AXIS1_sf_s
    {
    PK_VECTOR_t  location;   --- a cartesian point.
    PK_VECTOR1_t axis;       --- a direction.
    };
typedef struct PK_AXIS1_sf_s PK_AXIS1_sf_t;


This data structure is the standard form for a single axis.


This corresponds to STEP's axis1_placement structure.