[chimerax-users] select by atom type in given model

I have three models of the same protein. How can I select C3 carbons in a given model? When I do sel #3 C3 I get an error "Expected a Keyword". Therefore I have to select C3 in ALL models sel C3 and then do ~sel #1,2 for example, which deselects in models 1, 2. If I do "sel C3" and ctrl-click "in" model 1(only model 1 is visible), say, it deselects in all models. Is there a way to just select all C3 in model 3 in one single command? Is there a "keyword" for atom type (analogous to @ for atom names)? This would be very useful, for example, in command (cxc) files, where I wouldn't have to delineate all the models. (I suppose I could do ~sel #1,2,4,5,6,7,8 in a command file. This is ugly.) Thanks Steve