| http://www.w3.org/ns/prov#value | - Thus, it should be appreciated by those skilled in the art that the pen of the present invention, as thus described, provides the ability to change the indicia-bearing sleeve 28 to correspond with changeable coding systems as employed in particular plotting projects while, at the same time, assuring that the reflective outer surface 32 is placed and maintained in proper sensible alignment for the
|
