globalmapper.SaveProjectionToFile
=================================

.. currentmodule:: globalmapper
.. py:function:: SaveProjectionToFile (string aFilename, GM_Projection_t aProj, uint32 aReserved) -> GM_Error_t32

	Saves a GM_Projection_t structure to a projection (PRJ) file.
	
	:param str aFilename: filename of projection file to save to
	:param GM_Projection_t aProj: projection to save
	:param uint32 aReserved: Reserved for future use; must be 0.
	:returns: Error Code
	:rtype: GM_Error_t32