-  The Arc/Info Export (.E00) file format is widely used for sharing spatial data over the Internet, and it is familiar to ecosystem partners, the general public, and to Service GIS users. It compresses all needed data components into one file, and can be easily compressed further using public domain software (pkzip or gzip).

-  The ESRI Shapefile format is becoming very widely used; the code for creating shapefiles has been made available by ESRI on the Internet (see References).  This format is not as complete or robust as the other two, but is more universal and compact for sharing information.

-  The AutoCAD DWG file format has been in use for a number of years.  CAD programs as well as many GIS programs can readily use this format, and it is often the originating format for cadastral (survey) information. 

Part 270, FW 6, Data Management and Standards, dated September 30, 2002 has been superceded by Part 274, FW 2, Establishing Service Data Standards, dated March 4, 2009.

E00 Documentation:  Environmental Systems Research Institute (ESRI) Arc/Info technical documents give an overview of the format, and refer to many of the other types of software that can use the data. These documents can be accessed online here (http://training.esri.com/campus/library/index.cfm) in the Arc/Info or other literature sections.

Shapefile Documentation:  Technical documents explaining how to write the Shapefile format can be accessed in Adobe Acrobat format here   (http://www.esri.com/library/whitepapers/pdfs/shapefile.pdf)

DWG Documentation:  Specific information can be found at the Open DWG Alliance site at http://www.opendwg.org