OGR - Vector Data Access Support
OGR is a library allowing the reading and writing of a variety of vector formats using a geometry model based on the !OpenGIS Simple Features specification. It is integrated into MapServer as a way of reading a variety of vector formats.
Its use in MapServer is detailed in the OGR HOWTO:
The OGR library is part of the GDAL source tree, and detailed information about OGR can be found at:
OGR is maintained primarily by Frank Warmerdam, but the OGR integration into MapServer is done by Daniel Morissette.