Texinfo is the official format of the GNU system to create your
documentation: it is both a package with a set of programs and
utilities, and a markup language for creating documents (files with
extensions .texi, or .texinfo or .txi)

It allows to output documents for viewing on screen, with good
indexing and search options (called Info manuals); it may also provide
output in other digital formats such as pdf, html, and more. It is
also quite good to format for a book printed on paper ready for
binding.

As an online documentation generator, it remains between the best
there is; as a generator of books is much simpler and lighter than TeX
(which anyway is used as a gateway to the formatting of pages of
paper).

However, for the needs of Spanish-speaking community, has several
shortcomings:

• The manual, extensive, was not available in Spanish (at least not
  the texi source files). This issue is resolved because I translated it
  from scratch.

• For the Info output, one can give to the different nodes of the
  document the names in the language you want (well, at least you can do
  it with languages that use the Latin character set), but since the
  Info system is a network of nodes from many documents that may be
  referencing each other, these references will be lost when translated
  into our language. Ie, the whole nomenclature is "Anglo-centrist",
  both for cross-references, as for the menu entries.

• For some time now, the problem is solved for the accents and ñ in
  the output in Info, but it is not for the printed output.