Declare the presence of trapping information

If you are sending your PDF files to a print service provider, you can use the Document Properties dialog box to specify whether a PDF contains trapping information. This detail can help prevent the service provider from adding potentially conflicting trapping commands to the file. Trapping information can either be imported with other PostScript information from the authoring application, or it can be created in Acrobat using trapping presets supported by Adobe In-RIP Trapping.