Hi Elaine, Thanks a lot for the tip about Bild files. I'll experiment with that approach. And that's great to know there's interest in developing something like the "shape" command for ChimeraX. Best, Joel On 4/12/20, 1:29 PM, "Elaine Meng" <meng@cgl.ucsf.edu> wrote: Hi Joel, Sorry, there is no "shape" command in ChimeraX yet, although we would like to add something like that in the future. Currently ChimeraX does have defining 3D objects with the Bild text format, which is very simple: <https://urldefense.proofpoint.com/v2/url?u=http-3A__rbvi.ucsf.edu_chimerax_d... > However, the Bild approach is less convenient in that you must create a separate Bild file and then open it, you cannot change colors after creating the objects, etc. I hope this helps, Elaine ----- Elaine C. Meng, Ph.D. UCSF Chimera(X) team Department of Pharmaceutical Chemistry University of California, San Francisco > On Apr 12, 2020, at 4:19 AM, Joel Meyerson <jrm2008@med.cornell.edu> wrote: > > Hi, > Chimera has a “shape” command that I find quite useful. Does ChimeraX have this feature? I could not find it in the online documentation. > Thanks, > Joel