The Bookmark actions determine parameters for creating, importing, exporting and manipulating bookmarks:
Build Table of Contents uses bookmarks to create a table of contents for input documents.
Export Bookmarks create a copy of the bookmarks in input documents and then saves them to file.
Export Bookmarks to Text File creates a copy of the bookmarks in input documents and then saves them to a plain text (*.txt) file.
Generate Bookmarks from Page Text creates bookmarks from the text of input documents.
Import Bookmarks imports bookmarks into documents.
Import Bookmarks from Text File imports bookmarks from a text file into documents.