CLSD LN allows you to select a set of line entities whose
projections define a closed region in the current view.

Choose a Selection Menu option to specify the desired line
entities.

If the selected lines do not form a closed shape, they are
rejected and you are prompted with an error message. Choose
a Selection Menu option once again and reselect the desired
entities. 

When the selection process is completed, the area of the
region bounded by the projections of the selected entities
is calculated and displayed.

Press <Enter> to display the x and y coordinate position of
the centroid. This position is calculated with respect to
the current view coordinate system (XV, YV) and is marked
with a temporary asterisk (*).
