The layer controller allows addition and subtraction of layers of anatomy. The main model contains many layers. Layer 1 displays the bones with bone regions marked in red. Layer 2 displays muscle attachments, colored in blue. Thereafter, layers of anatomy are superimposed as the layer number increases.
Use the up (>) and down (<) buttons on the control to add and subtract layers. To jump several layers pick the layer using the combo box between the up and down buttons.
The Deep and Super (superficial) buttons allow the user to jump to the bone and surface anatomy layers respectively.