Enable for commenting in Acrobat X Pro
When I try to 'enable a PDF for commenting' in Acrobat X, via the function 'save as' - 'Reader Extended PDF', I only have one further option, i.e.: 'Enable Forms fill-in and save in Adobe Reader'. When I select this option, a message pops up, telling me that
'Only the following features will become available for this document when opened in the free Adobe Reader: ‘Save form data (for a fillable PDF form only).'
Indeed, once opened in Adobe Reader, the function ‘comment & markup’ is not available for reviewers in Adobe Reader.
Can anyone clarify what is going wrong, and how we can enable the commenting & markup tool?