VBoolean VWriteGraphs (FILE *file, VAttrList attrs, int n, VGraph graphs[]) { return VWriteObjects(file, VGraphRepn, attrs, n, (VPointer *)graphs); }
VBoolean VWriteEdges (FILE *file, VAttrList attributes, int nedge_sets, VEdges edge_sets[]) { return VWriteObjects (file, VEdgesRepn, attributes, nedge_sets, (VPointer *) edge_sets); }
VBoolean VWriteImages (FILE *file, VAttrList attributes, int nimages, VImage images[]) { return VWriteObjects (file, VImageRepn, attributes, nimages, (VPointer *) images); }