Most often than not, I implement all my comments to PDF files (such as manuscript proofs) using the many rich features of Adobe’s Acrobat Professional. However, I always prefer to “flatten” these comments that is, make them a permanent part of the PDF document. There are a few methods for doing this, but by far, the fastest and most clever is this one, found on PlanetPDF
- In Acrobat professional, type “Ctrl + j” to invoke the java script dialog
- In that dialog, type: this.flattenPages();
- press “Ctrl + Enter”
Don’t forget to save your document.