diff --git a/bin/rq.dll b/bin/rq.dll
index b98232c..cd56499 100644
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diff --git a/doc/rq.pdf b/doc/rq.pdf
index 1b3d03e..3b3780b 100644
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diff --git a/include/rq.h b/include/rq.h
index 69b5354..587a3e6 100644
--- a/include/rq.h
+++ b/include/rq.h
@@ -187,7 +187,8 @@ API void rqSetPointLightImage      ( const int point_light_id,
 ////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
 API int  rqAddParallelLight           ( );
 API void rqSetParallelLightDirection  ( const int parallel_light_id, const float x, const float y, const float z );
-API void rqSetParallelLightTangent    ( const int parallel_light_id, const float x, const float y, const float z );
+API void rqSetParallelLightTangent    ( const int parallel_light_id, const float x, const float y, const float z ); // Used for projection map
+API void rqSetParallelLightPosition   ( const int parallel_light_id, const float x, const float y, const float z ); // Used for projection map
 API void rqSetParallelLightColor      ( const int parallel_light_id, const float r, const float g, const float b );
 API void rqSetParallelLightPhoton     ( const int parallel_light_id, const int   photon ); // # of light paths
 API void rqSetParallelLightSample     ( const int parallel_light_id, const int   sample );
diff --git a/lib/rq.exp b/lib/rq.exp
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diff --git a/lib/rq.lib b/lib/rq.lib
index a7bb510..4fff49d 100644
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