Techniques for assigning a region attribute to a region in a drawing are
disclosed. One technique includes editing the drawing to define a current
region, associating the current region with a previous region having a
previous region attribute, and assigning the previous region attribute to
the current region. Another technique includes deriving a previous path
attribute and a relation for a previous path, editing the drawing to
define a current set of paths having current regions, and assigning the
previous path attribute to at least one current region based on the
relation of the previous path.