fix | 
Set the fixed status of a molecule. | 
get_center | 
Get the coordinates of the displayed center of a molecule | 
get_rotation | 
Gets the rotation of a given molecule | 
get_scale | 
Get the scaling factor for a molecule | 
get_translation | 
Get the translation for a molecule relative to scene center | 
is_fixed | 
Query if a molecule is fixed. | 
is_shown | 
Query if a molecule is shown | 
set_center | 
Set the center of an individual molecule | 
set_rotation | 
Set the rotation of an individual molecule | 
set_translation | 
Set the translation of an individual molecule | 
show | 
Set if a molecule is shown |