Let Adobe Reader also annotate PDF documents

I'm afraid very few people know that more than 6.0 of Adobe Reader provides the ability to annotate PDF documents with special permissions, fill out form fields, edit document contents, insert or delete pages, and save. This feature makes sense for users who have little exposure to PDFs or PDFs that don't require too much complex processing, so they don't need to buy adobe Arcobat just to fill out a form or add a comment for thousands of dollars, of course, if you're using pirated software. ...

In order for the PDF document to gain this special privilege, in addition to using the more expensive LiveCycle Reader extensions, it is more feasible to give the permission directly when creating the PDF document, as shown in Figure 1, under the Comment menu, select the Enable in Adobe Reader to annotate the document, and then a dialog box pops up asking the user for confirmation, then prompts you to specify the target path to save, and then gets the PDF document that is given special permissions.

Now, you may want to try using Adobe Reader to open the PDF document, not only to insert comments and tags, but also to complete the saved operation, interested friends may wish to try.

Tip: For ready-made PDF documents, you can no longer be given the special permission to "Enable annotation documents in Adobe Reader", but you could recreate a PDF document to do similar things.