Index: django/contrib/gis/gdal/__init__.py
===================================================================
--- django/contrib/gis/gdal/__init__.py	(revision 7631)
+++ django/contrib/gis/gdal/__init__.py	(working copy)
@@ -19,6 +19,11 @@
   types (GDAL library not required).
 
  SpatialReference: Represents OSR Spatial Reference objects.
+ 
+ The GDAL library will be imported from the system path using the default 
+  library name for the current OS. Override the library path by specifying
+  settings.GDAL_LIBRARY_PATH. Prevent GDAL from loading by setting
+  GDAL_LIBRARY_PATH to a non-existant file (but not None/False/'').
 """
 # Attempting to import objects that depend on the GDAL library.  The
 # HAS_GDAL flag will be set to True if the library is present on