i opened a cad file that was sent to me and the doors and circled looked funny. the arc for the door swing is not in a smooth path but rather sharp and made of 2 connected angular lines. I remember there's a command to make all the doors in the drawing look smooth again. i think the command is "refresh" or something like that. but I'd try typing in refresh and it doesn't work. does anyone know what the command is?

REGEN or REGENALL.

VIEWRES will smooth your arcs and circles

I think the RE command will work in this case.