This article is from the Scientific Data Format Information FAQ, by Ilana Stern ilana@kiowa.scd.ucar.edu with numerous contributions by others.
The Digital Line Graph (DLG) format is used by USGS to store geographical
vector data. Documentation on this format is available at
<URL:ftp://spectrum.xerox.com/depts/markc/demtools/demwork/dlg/doc/>.
 
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