INQUIRE COMMANDS
****************

These commands allow for enquiries on the graphics information held
on file.

The commands are:-

    POINT:-     Returns the point number and co-ordinates.
    PT-PT:-     Returns the point to point distance as defined.
    PT-LN:-     Returns the normal distance from a point to a line.
    LINE:-      Returns the Pen Number used for the line. Also the 
                distance between the end points as well the angle
                and bearing.
                Alternate selection gives the total length of
                lines under the same line type. 
    CIRCL:-     Returns the radius, arc length of circles/arcs.
                Also the area for circles/ellipses, as well as the
                Pen Numbers for the boundary and the hatching.
                Alternate selection gives the total length of
                arcs under the same line type.
    PLANE:-     Returns the number of vertices, perimeter, area, and 
                the centroidal co-ordinates, as well as the Pen Numbers 
                for the boundary and the hatching.
    SYMBL:-     If enquiring on individual symbols, it will return 
                the Pen Number used for the symbol. If enquiring on
                sub-drawing (with alternate selection), usage of 
                symbols that have a name would be tabulated. This 
                can be filed and used with user written interfacing 
                programs such as TALLY listed under UTILI INTERface.
    CURVE:-     Returns the Pen Number used for the curve, and the 
                length of the curve.
                Alternate selection gives the total length of
                curves under the same line type.
    ANGLE:-     Gives the anti-clockwise angle from Pt 1 to Pt 3 
                through Pt 2.
    LIMIT:-     Gives the current count of attribute usage (including
                deleted attributes and those in REF SUBDRAWING) and
                the program limits.
    