Added missing OSG_SCREEN_WIDTH docs
Added missing OSG_SCREEN_WIDTH docs


openscenegraph/osg,tomasthoresen/osg,tomasthoresen/osg,scrawl/osg,jtorresfabra/osg,jtorresfabra/osg,scrawl/osg,jtorresfabra/osg,marchelbling/osg,openscenegraph/osg,marchelbling/osg,artoolkit/osg,marchelbling/osg,artoolkit/osg,artoolkit/osg,openscenegraph/osg,tomasthoresen/osg,openscenegraph/osg,jtorresfabra/osg,marchelbling/osg,scrawl/osg,artoolkit/osg,scrawl/osg,tomasthoresen/osg