here is sme stuff..
    adm and apr submit jobs to the central
    batch processing machine (ge-635 gcos)
    i only remember a command to submit a print
    job. the pdp-7 had no printer. actually, there
    was a newer print job that got the printing
    done by rejecting the batch job for some
    trivial syntax error. printing would cost.
    job rejection was free.
    sys save generated a core file that,
    when executed, would continue after the
    sys save. it was used for breakpointing
    long jobs and for jobs that had a lot of
    initialization so they would start up faster.
    a note; this unix did not have a hierarchical
    file system. there were only a fixed number
    of directories. each was linked to by the
    directory directory dd. to get to another
    directory, you did
    chdir dd
    chdir dir
    but the chdir command would take
    multiple arguments so the above is
    chdir dd dir
    if you ever unlinked your link to dd,
    you would be cut off.
    later dd became .. meaning up. one could
    not reference a file in another directory
    directly. thus you had to link to it by a local
    name and then reference through the local
    name. this
    link; sys; x; y
    made a local link y to the file x in directory
    sys referenced off of dd. does that clear
    up some of the naming confusion.
    i will work on some of the other stuff you
    mention. some of it sends gravity waves
    through the cobwebs, but nothing specific.
    ken