To enable tags in a natural language instead of the quite cryptic tags we
normally use (like {{+N}} etc.), you need to do the following:

# add a regex file in {{$GTLANG/src/tagsets/}}
# specify the regex file and the corresponding
  fst's in {{$GTLANG/src/tagsets/Makefile.am}}
# specify the name of the fst's with the new tags
  as targets in {{$GTLANG/src/Makefile.am}}

The name of the regexes and the name of the localised fst's are related,
such that {{tagsets/foo.regex}} corresponds to {{analyser-foo-desc.hfst}} etc.
Typically you would want to use the language code of the natural language the
tags are written in.

!!!In more detail

!!Add a regex file

Since the natural language of the tags will vary a lot depending on the
language of the analyser, the regex is language specific. But to get a starting
point, have a look at {{langs/sme/}}, or use it as a starting point:

{{{
cp langs/sme/src/tagsets/nob.regex langs/YOURLANG/src/tagsets/LANGCODE.regex
}}}

Replace {{YOURLANG}} and {{LANGCODE}} with the relevant language codes.
Then start to edit the file to get what you want. For North Sami ({{sme}}) we
have tags in Norwegian Bokmål ({{nob}}).

!!Specify renaming regex and fst files

For the build system to properly build the fst's that are going to change the
tags, you need to tell it that there is a source file and some targets to be
built. This you specify in {{$GTLANG/src/tagsets/Makefile.am}}.

Open this file, and list the source file(s) in the variable {{GT_TAGSET_SRCS}}.
Then list the {{hfst}} and {{xfst}} targets in the appropriate sections for the
variable {{GT_TAGSETS}}.

In the North Sami case, these files are named: {{nob.regex}}, {{nob.hfst}} and
{{nob.xfst}}.

!!Specify the new analysers and generators

You also need to tell the build system that you have a new set of analysers and
generators you want to build. This is done in the file
{{$GTLANG/src/Makefile.am}}. For North Sami, we want to build e.g. the file
{{analyser-nob-desc.hfst}}. You tell the build system this by adding that name
to the variable {{GT_ANALYSERS_HFST}}. And similar for other files. Have a look
at North Sámi to see how it is done for the rest of the analysers and generators
you may want.

When these three steps are done, you can type {{make}}, and you should soon be
greeted with a new set of analysers and generators!