Hi, We are using Chimera production release version 1.2304 on Red Hat Linux and SGI. When going from quad-buffered stereo mode to mono, the balloon help as well as atom/bond balloon info is toggled 'off'. This can be re-enabled within the session by toggling the balloon options manually under Preferences, however I don't think this behavior existed in previous versions of Chimera. Alternatively, the balloons can be restored by saving the session and restarting the chimera software. We use the balloon feature frequently to teach command line selection syntax in our molecular graphics workshops. I wonder if anyone else has encountered this behavior linked to hardware stereo. Thank you for looking into this issue. Eric ______________________________________________________________________ Eric S. Dawson, Ph.D. CSB Computation, Education & Outreach Research Instructor, Biochemistry Center for Structural Biology (CSB) 5137 MRBIII Vanderbilt University Nashville, TN 37232-8755 Tel: (615)-936-5579 (MRB III) Tel: (615)-322-3303 (5119 SC) Fax: (615)-936-2211 "All that is gold does not glitter, not all those who wander are lost." J.R.R. Tolkien - Fellowship of the Ring