In an accessible PDF, all form fields are tagged and are a part of the document structure.
In addition, you can use the tool tip form filed property to provide the user with
information or to provide instructions.
To tag form fields, choose Tools > Accessibility > Autotag Form Fields.
For accessibility, all form fields need to have a text description that can accurately
describe what the form field is for. This is also known as a Tool Tip. To add a text
description to a form field:
- Select one of the Form tools, and then right-click (Windows) or Ctrl-click (Mac OS) the form field.
- Choose Properties from the context menu.
- Click the General properties tab.
- Enter a description of the form field in the Tooltip field.