.. External references.

.. _Cygwin: http://www.cygwin.com
.. _Flymake: http://flymake.sourceforge.net
.. _Frobot: http://www.ifarchive.org/if-archive/mapping-tools/frobot12.zip
.. _Frotz: http://frotz.sourceforge.net
.. _GNU Emacs: http://www.gnu.org/software/emacs
.. _GUEmap: http://www.cjmweb.net/GUEmap
.. _Graphviz: http://www.graphviz.org
.. _IF archive: http://www.ifarchive.org
.. _IFMapper: http://rubyforge.org/projects/ifmapper
.. _Inform 6 sources: http://www.ifarchive.org/if-archive/infocom/compilers/inform6/source
.. _Narrative Flow Graphs: http://gram.cs.mcgill.ca/nfg.php
.. _VIM: http://www.vim.org
.. _Xfig: http://www.xfig.org
.. _`Inform 7`: http://www.inform-fiction.org/I7/Inform%207.html
.. _asciimapper: http://www.ifarchive.org/if-archive/mapping-tools/asciimapper
.. _groff: http://groff.ffii.org
.. _ifm2i7: http://www.ifarchive.org/ifarchive/mapping-tools/ifm2i7.tar.bz2
.. _mapping tools: http://www.ifarchive.org/if-archive/mapping-tools