Changes
/* The Various Elements of a Propagation Scene */
| style="width:200px;" | Ray reflection, ray diffraction, ray transmission inside material media
| style="width:250px;" | All solid geometric objects, no surface or curve objects
| style="width:300px;" | Used to model wave propagation inside a volumetric material block, also used for creating individual solid walls in indoor scenes
|-
| style="width:30px;" | [[File:base_group_icon.png]]
