visual.scene has 
add_renderable
ambient
autocenter
=====autoscale
background
bind
center
delete
enable_shaders
exit
fillswindow
foreground
forward
fov
fullscreen
get_selected
height
info
kb
======keyboard
lights
lod
material
menus
======mouse
objects
======pick
range
remove_renderable
render_scene
report_closed
report_mouse_state
report_view_resize
report_window_resize
scale
======select
set_selected
stereo
stereodepth
title
trigger
unbind
uniform
up
userspin
userzoom
visible
waitfor
waitfor_event
width
window
y