digraph singular {
	gmp [ color=lightgrey, fontcolor=blue, style=filled, shape=box ];
	gmp -> ntl;
	gmp -> factory_libfac;
	gmp -> coeffs;
	ntl [ color=lightgrey, fontcolor=blue, style=filled, shape=box ];
	ntl -> factory_libfac;
	omalloc_xalloc [ color=lightgrey, fontcolor=green, style=filled ];
	omalloc_xalloc -> factory_libfac [label="x"];
	omalloc_xalloc -> reporter;
	omalloc_xalloc -> coeffs;
	omalloc_xalloc -> polys;

        resources_resources [ color=lightgrey, fontcolor=blue, style=filled ];
	resources_resources -> factory_libfac [label="for testing"];
	resources_resources -> libpolys;
	resources_resources -> kernel;
	resources_resources -> SingularInterpreter;

        factory_libfac [ color=lightgrey, fontcolor=blue, style=filled ];
	factory_libfac -> libpolys;
	factory_libfac -> kernel;
	factory_libfac -> SingularInterpreter;
	
	misc -> reporter;
	misc -> coeffs;
	misc -> polys;
	reporter -> coeffs;
	reporter -> polys;
	reporter -> misc;	
	polys -> ext_fields;
	coeffs -> ext_fields;	
        coeffs [ fontcolor=blue ];
	coeffs -> polys;
	edge [style=dashed];
	ntl -> coeffs;
	polys [ fontcolor=blue ];
	ext_fields -> coeffs;

        kernel [ fontcolor=blue ];

        libpolys -> kernel;
        numeric [ fontcolor=blue ];
	kernel -> numeric;
	kernel -> SingularInterpreter;
        SingularInterpreter [ fontcolor=red ];
        numeric -> SingularInterpreter;
        libpolys -> SingularInterpreter;
	
        IntegerProgramming [ fontcolor=blue ];
}

// dot -Tpng -o singular.png singular.dot

// boxed = third party
// filled = external
// blue = math