=Introduction=

The GF Resource Grammar Library is the standard library for Grammatical Framework.
It covers the morphology and basic syntax of currently #LANGUAGE_COUNT languages:
#LANGUAGES

This document contains the most important parts of the GF Resource Grammar API,
as needed by a GF application programmer.
It has been machine-generated from the source files; there are links
to the relevant source files, which give more information. Some of the files have
not yet been prepared so that the machine generated documentation has the nicest
possible format.

% These hardcoded TOC links (chapter 4 onwards) need to be updated as new languages are added.

The main contents are:
- [Chapter 1 #toc2]: categories, with links to the functions for constructing trees in them.
- [Chapter 2 #toc5]: syntactic construction functions, with cross-links and examples.
- [Chapter 3 #toc85]: morphological (lexical) paradigms.
- [Chapter 4 #toc121]: additional libraries.
- [Chapter 5 #toc127]: how to "browse" the library by loading the grammars into the ``gf`` command editor.
- [Chapter 6 #toc128]: a brief example of how application grammars can use the resource modules.
- [Detailed table of contents #toc129].


The [RGL Browser http://www.grammaticalframework.org/~john/rgl-browser/] tool allows you to interactively browse through
the library, view all functions in a module's scope, and quickly jump to their definitions.


Other relevant documents:
- [The RGL Status Document ../status.html]: the current status of different languages
  and the authors of each grammar
- [RGL Documentation and Publications ../rgl-publications.html]: links to publications and other documentation
- [More modules ../gfdoc/sources.html]: extra modules, dictionaries, and
  the internals of the resource grammar
- [Internal abstract syntax ../absfuns.html]: synopsis of internal
abstract functions and their Universal Dependency labels
- [Minibar http://cloud.grammaticalframework.org/minibar/minibar.html]:
  find resource grammar expressions by parsing (select Grammar: LibraryBrowser)
  or test translations between all languages (select Grammar: ResourceDemo)
- [Resource Grammar Tutorial http://www.grammaticalframework.org/lib/doc/rgl-tutorial/index.html],
  as previously presented in LREC-2010.
- Paper "The GF Resource Grammar Library" by A. Ranta
  (//Linguistic Issues in Language Technology//, 2 (2), 2009). An overview of
  the library with linguistic motivations.
  [PDF https://journals.colorado.edu/index.php/lilt/article/view/1205/1047]
- Paper "Grammars as Software Libraries" by A. Ranta
  (In Y. Bertot, G. Huet, J-J. Lévy, and G. Plotkin (eds.),
   //From Semantics to Computer Science//, Cambridge University Press,
   Cambridge, pp. 281--308, 2009).
  The library from a software engineering point of view.
  [PDF http://www.cse.chalmers.se/~aarne/old/articles/libraries-kahn.pdf]