Represents the "Fields" entry of the submit-form action object.

It is an optional entry defined as part of the PDF 1.0 specification.

It contains an array which contains FieldElements.

For definitive details see:.

The ISO PDF Specification, ISO 32000-1:2008 PDF 1.7; Table: 236, page 452.

The ISO PDF Specification, ISO 32000-2:2017 PDF 2.0; Table: 239, page 548.

The fields list contains indirect references to form field dictionaries. Whether these fields are included or excluded is controlled by bit 1 (Include/Exclude) of the Flags entry.