Hi, The ChimeraX command line, similar to Chimera, is active no matter where the mouse cursor is positioned. So I can have a residue selected, and start typing a command directly - so far so good. However, in Chimera, once I start typing, I can then page through the command history, using the up arrow or shift-up to filter by substring. In ChimeraX, this doesn’t work - the command line receives text input, but in order to then page through the history, I need to actively click on the command line entry bar to activate it - it would be good if this behavior was altered to that of regular chimera. Apologies for the vague description, hope that made sense! Cheers Oli