[Chimera-users] Regarding backbone images for protein structures

Hello, I have been using Chimera for observing the 3D model of protein structures. For viewing the backbone structure, I used the following commands: show backbone or show minimal But in the latest production version 1.4, I am not able to view the backbone/minimal structure. The 3D structure is rendered properly but the above command do not seem to work. Have there been any changes in the format for above commands or have they been substituted by some other commands? Thanks, Saurabh