27nov15
commandline>python>>>import visual >>> dir(visual.label)
says that vpy label. has the following subsidiaries 
label
.background;;
.blue;;
.border;;
.box;;
.check_init_invariants;;
.color;;
.display;;
.font;;
.frame;;
.get_display;;
.get_frame;;
.get_visible;;
.green;;
.height;;
.init_defaults;;
.line;;
.linecolor;;
.material;;
.opacity;;
.pos;;
.primitive_object;;
.process_init_args_from_keyword_dictionary;;
.red;;
.set_bitmap;;
.set_display;;
.set_frame;;
.set_visible;;
.space;;
.text;;
.visible;;
.x;;
.xoffset;;
.y;;
.yoffset;;
.z;;]