Version 101.6a fixes bugs in v101.6 and adds a single-file PDF version of the SAC manual. Go to URL <http://www.iris.edu/dms/nodes/dmc/software/downloads/sac/101-6a/> for links to summaries of what is new and to the IRIS SAC Software Request Form. Arthur Snoke <snoke at vt.edu> Brian Savage <savage at uri.edu>