5. Filters
5.1. Overview
The filters available are summarised below.
| Name | Purpose |
| General: | |
| table | tabular data |
| note | a note |
| quote | a quotation |
| abstract | the abstract for a paper |
| title | title block for a memo, fax or minutes |
| Line based: | |
| example | fixed-width text (e.g. source code) |
| verbatim | fixed-width text, ignoring embedded symbols |
| ascii_graphic | fixed-width text, wide enough for ASCII graphics |
| nofill | a set of lines |
| address | an address |
| Components: | |
| front | front section of a document |
| about | about section of a document |
| appendix | change headings to appendix style |
| plain | change headings to plain style |
| Formatting: | |
| box | surround a region of text with a box |
| changed | mark a block of text as changed |
| sections | paragraphs are sections |
| namevalues | format a set of name-value pairs (e.g. as used in a title block) |
| sdf | apply arbitrary phrase attributes to text |
| pod | embedded POD |
| File processing: | |
| comment | ignore text |
| topics | include a set of sub-topics |
| inline | embed text into target format (e.g. HTML) |
| script | execute text as a Perl script |
| end | process text at the end |
| get | extract embedded documentation |
| Configuration: | |
| langdefs | define vgrind-like language definitions |
| define | define a block of variables |
| default | provide defaults for a block of variables |
| simple | generic filter for building others |
| datestrings | define strings used within dates |
| Help: | |
| hlp_header | table of jumps at the top of a help topic |
| hlp_window | contents of a help popup window |
Further details on these are provided below.