About removing objects: example of usage

You can select a given area in your PDF document and remove text or objects, i.e. line art, images or shadings, inside or outside that area. For example, suppose you have a PDF document in which the header of each page contains a page number on a shaded line-art background. You wish to remove the line art with shading, but keep the page numbers.

Figure 1. Removing line art with shading inside and overlapping the selected area but keeping the text