[chimera-dev] volume display in my gui

Hi, I am developing a GUI with Tkinter, using anaconda's python 2.7.9. I like how chimera displays volumes (density maps), so I would like to a chimera-volume-display in my GUI. I am now disregarding anaconda and developing all within chimera's IDLE. However, I do not know which chimera commands I could use for my purpose; could you please point to some choices? I am new with developing chimera extension and tkinter, and I mostly look for code examples. I had a look at  http://www.cgl.ucsf.edu/chimera/docs/ProgrammersGuide/Examples/, "Working with the Chimera Extension Manager," but I do not know which commands I could use to have chimera display a volume in a grid of my GUI.  Thanks!Stu