# Forms Data Format

- Introduction
- Installing/Configuring
  - Requirements
  - Installation
  - Runtime Configuration
  - Resource Types
- Predefined Constants
- Examples
- FDF Functions
  - fdf_add_doc_javascript — Adds javascript code to the FDF document
  - fdf_add_template — Adds a template into the FDF document
  - fdf_close — Close an FDF document
  - fdf_create — Create a new FDF document
  - fdf_enum_values — Call a user defined function for each document value
  - fdf_errno — Return error code for last fdf operation
  - fdf_error — Return error description for FDF error code
  - fdf_get_ap — Get the appearance of a field
  - fdf_get_attachment — Extracts uploaded file embedded in the FDF
  - fdf_get_encoding — Get the value of the /Encoding key
  - fdf_get_file — Get the value of the /F key
  - fdf_get_flags — Gets the flags of a field
  - fdf_get_opt — Gets a value from the opt array of a field
  - fdf_get_status — Get the value of the /STATUS key
  - fdf_get_value — Get the value of a field
  - fdf_get_version — Gets version number for FDF API or file
  - fdf_header — Sets FDF-specific output headers
  - fdf_next_field_name — Get the next field name
  - fdf_open_string — Read a FDF document from a string
  - fdf_open — Open a FDF document
  - fdf_remove_item — Sets target frame for form
  - fdf_save_string — Returns the FDF document as a string
  - fdf_save — Save a FDF document
  - fdf_set_ap — Set the appearance of a field
  - fdf_set_encoding — Sets FDF character encoding
  - fdf_set_file — Set PDF document to display FDF data in
  - fdf_set_flags — Sets a flag of a field
  - fdf_set_javascript_action — Sets an javascript action of a field
  - fdf_set_on_import_javascript — Adds javascript code to be executed when Acrobat opens the FDF
  - fdf_set_opt — Sets an option of a field
  - fdf_set_status — Set the value of the /STATUS key
  - fdf_set_submit_form_action — Sets a submit form action of a field
  - fdf_set_target_frame — Set target frame for form display
  - fdf_set_value — Set the value of a field
  - fdf_set_version — Sets version number for a FDF file