On Sat, Mar 02, 2019 at 12:30:27PM +0000, Ralph Corderoy wrote: > Hi, > > groff_tmac(5) says > > ptx A single macro is provided in this file, xx, for formatting > permuted index entries as produced by the GNU ptx(1) program. > In case you need a different formatting, copy the macro into > your document and adapt it to your needs. > > but /usr/share/groff/1.22.3/tmac has no ptx.tmac. > > There is a /usr/heirloom/lib/doctools/tmac/ptx from package > heirloom-doctools. >
The file "tmac/ptx.tmac" is not installed by default. Therefore it has to be installed manually, either from a repository or a tarball. -- Bjarni I. Gislason
