save [ session_file ]
save will save all of the open spectral windows into a single file so that the exisising session can be restored at a later date. If session_file is specified, the data will go to that file, otherwise the name of the session file will be derived from the current date and time.
session_file may be read back in by rdwin.
/hhmi/nv3/hhmi/save.tcl