The Different Ways to Start a Form
For several versions of Adobe Acrobat, we’ve been able to open a PDF file in Acrobat X Pro or Standard and “detect” where form fields should go (Acrobat automatically creates fillable form fields for you), create fields by hand, or use a combination of the two.
Opening a PDF and “detecting” form fields requires that the PDF you created contains placeholder blank lines, boxes, circles, etc., where the form fields should go (see Figure 1). These placeholder items are added to the document in the originating application, such as Adobe InDesign or Microsoft Word, before the file is converted into a PDF. You don’t have to add these placeholder items, but it can make your job easier in Acrobat when it comes to creating the fields.
Figure 1 A PDF file with blank areas where the fields will be