Working with Fillable Fields and Fillable Checkboxes
FillableField and FillableCheckbox elements create an AcroForm field or AcroForm checkbox object respectively. To comply with accessibility requirements, the ToolTip property for these AcroForm fields is populated with the ToolTip element value authored.
Note: If the ToolTip element is not authored, the FieldName element value authored is used to populate the ToolTip property as it is required for accessibility checker rules.
When producing a Tagged PDF (see Creating a Tagged PDF) that includes FillableField/FillableCheckbox elements, a <Form> tag is placed in the tag tree in context to where they are located in the content for logical reader order.
See Requirement Editor Online Help for information on how to author Fillable Field and Fillable Checkbox elements.