MULTIPLATFORM AND EXTENSIBLE SOFTWARE FOR VISUALIZATION OF THREE DIMENSIONAL MODELS FOR USE IN COMPUTER AIDED DESIGN (CAD), COMPUTER AIDED MANUFACTURING (CAM) AND COMPUTER AIDED ENGINEERING (CAE); COMPUTER SOFTWARE FOR VISUALIZATION, EDITING, AUTHORING, MODIFICATION AND SHARING OF COMPUTER CREATED DESIGNS, MODELS, ASSEMBLIES, AND DRAWINGS FOR GENERAL USE IN THE FIELD OF THREE DIMENSIONAL VISUALIZATION