Here are some updates on my article 
  in the Ario 2000 Expedition report relating to XML and its potential 
 as a source for comprehensive documentation which can be flexibly filtered, 
 sorted, and otherwise processed. I have an XML file for each cave area and
XSLT files to translate the XML to a text or graphics display format. I have
updated the XML to take account of the latest information that I have following
the Tormenta 2002 Expedition but corrections and additions will be welcomed
and I hope that this will become the definitive source of  data on OUCC's
findings in the Picos. If you don't understand the acronyms, don't worry;
just play with the pictures!
      
     There are three categories:           
XML  (text documents/data)     SVG  (dynamic 2D drawings)    X3D/VRML (dynamic 3D models)
           
       Shaft bashing guides (HTML and XML) in both Summary
and   Detail  forms and area locations (SVG) can be accessed via http://www.laverty.freeserve.co.uk/XML/CaveReg/areaGuides.htm
   The HTML and SVG files were produced from the XML using XSLT. If your
browser    is set up correctly the XML files will automatically be translated
to HTML    and look identical to the preconverted detailed file (view the
source to  prove  it is XML); otherwise you will see the XML text itself,
or the XML  translated  into a collapsible tree structure (often the Internet
Explorer  default). It is not a big step to generate PDF documents instead
of HTML and SVG - the software exists and is freely available.
       
             
       This image (http://website.lineone.net/~martinla/GOG/svg/ario2002gis.jpg) 
   links to a multi-layered mapping (Geographical Information System-like) 
 page  (in HTML, SVG and Javascript) at http://website.lineone.net/~martinla/GOG/svg/arioAreas.htm.
   You will need an SVG plugin (one comes with RealAudio nowadays, otherwise
   available at http://www.adobe.com/svg)
   
       
       It shows passages in Pozu  la Tormenta (using Scaleable Vector
   Graphics) in red; Xitu (using a none-scaling GIF image) in grey; well-located
   entrances in white; less definitely located entrances in yellow); plus
the   locations of  features such as peaks and the Ario refugio; and
the UTM  grid. You can right click and then rescale,  recentre, search
for text  in the drawing (eg highlight where 54/4 is), and change what is
displayed.   It also prints out well.
       
             
This image links to the VRML model on Martin Laverty's 
       VRML pages: 
       http://www.laverty.freeserve.co.uk/VRMLhome.htm 
  (You'll need a VRML plugin for your browser, available from http://www.cai.com/cosmo   - or refer
to http://www.laverty.freeserve.co.uk/Text/VRMLintr.htm).
      
       
 
      It shows Tormenta (red), Muxa, Xitu, Culiembro (turquoise); Asopladeru
  la  Texa (yellow); 1/4 and 8/11 (darker yellow); Cuerries (darker blue);
 plus  assorted entrances, peaks and dye traces.
     
     VRML is an encoding of 3D data using lots of curly brackets. X3D is
an  XML  encoding of 3D data which uses lots of pointy brackets. X3D can
easily  be  generated from base data stored in XML using XSLT. There are
one or two  experimental  browsers which can display X3D directly, but it
is currently  more common to translate the X3D to the older VRML syntax which
is better  supported by browsers. There are also tools to complete the circle
and translate  VRML to X3D. This model was produced in VRML - the cave survey
line data coming from the Walls survey program - but in future cave survey
programs should produce XML output and that will be converted to X3D/VRML.