13. The image processing apparatus according to claim 1 , wherein the transparent graphics description is described by the shape of graphics according to a user's instruction.
13. The image processing apparatus according to claim 1 , wherein the transparent graphics description is described by the shape of graphics according to a user's instruction. 14. The image processing apparatus according to claim 13 , further comprising: a display unit configured to display a user interface that enables a user to select at least one of shape, line width, and highlight color of the graphics of the transparent graphics description.