(There was no release 1.22.)

groff

• A new option ‘−j’ has been added to call the ‘chem’ preprocessor.

tbl

• Improved line numbering support.

macro packages

• Support for the ‘refer’ preprocessor has been added to the −mm macro package.

• In −me, the ‘TH’ macro was changed for compatibility with line number support in tables.

  ‘bl’ now works inside of blocks.

  The behaviour of centered blocks has been improved.

  Line numbering support has been improved.

• The −mom macro package has reached version 2.0, focusing on PDF output with gropdf (using the new ‘pdfmom’ wrapper script). See the file ‘version−2.html’ of the −mom documentation for a list of the many changes.

• Some generic Unicode fallback characters (mainly Roman numerals) have been added.

tbl

• Added numbered line support in tables.

gropdf

• A new driver for generating PDF output directly, contributed by Deri James.

  Note that this driver is written in Perl; you need a working Perl installation to run this output device.

pdfmom

• A new wrapper around groff that facilitates the production of PDF documents from files formatted with the −mom macros.