Base document class.
begin_list(): Begin list of items.begin_list_entry(name, description): Begin list entry.close(): Close document.end_list(): End list of items.end_list_entry(): End list entry.file_name(name): Return actual file name of documentlink(name, location): Output link to given location.paragraph(text): Output paragraph of text.section(name): Output section to file.sub_list_entry(name, description): Begin sublist entry.subsection(name): Output subsection to file.subsubsection(name): Output sub-sub-section to file.