PATH
GDAL_DATA
GDAL_DRIVER_PATH
GDAL_FILENAME_IS_UTF8
GEOTIFF_CSV
GISBASE
GRASS_HTML_BROWSER
GRASS_PROJSHARE
GRASS_PYTHON
GRASS_SH
GRASS_WISH
JPEGMEM
NLS_LANG
OSGEO4W_ROOT
PROJ_LIB
PYTHONHOME
PYTHONPATH
QGIS_PREFIX_PATH
QT_PLUGIN_PATH
QT_RASTER_CLIP_LIMIT
VSI_CACHE
VSI_CACHE_SIZE