This directory contains several tpcfg files corresponding to "standard"
DEM distributions, to use/pack/test them, you will have to download the
reference DEM data (be aware some span tens of megabytes).
You'll find links below to the providers of those datasets.

Use of HTF for redistribution of DEM data is free and encouraged as long
as original source(s) and copyrights of dataset(s) are appropriately listed
and honoured, and a utility to unpack the dataset(s) is joined with 
the dataset or a link/website made available.

Eric Grange
http://glscene.org


DEM data sources
----------------

TerrainBase/ETOPO5, from the NOAA National Data Center/NGDC (18 MB uncompressed)
http://www.ngdc.noaa.gov/seg/fliers/se-1104.shtml

ETOPO2, Smith, W. H. F. and D. T. Sandwell, NOAA/NGDC (133 MB uncompressed)
http://topex.ucsd.edu/marine_topo/mar_topo.html
http://www.ngdc.noaa.gov/mgg/fliers/01mgg04.html

GLOBE, "Global Land One-km Base Elevation" project (287 MB, expands to 1.7GB)
http://www.ngdc.noaa.gov/seg/topo/globe.shtml

Maui_1k, BT file from the "Virtual Terrain Project" (4MB uncompressed)
http://www.vterrain.org
http://www.vterrain.org/BT/index.html