other MTS sites that did not have direct access to the MAILNET relay at MIT. The remote e-mail addresses for an MTS user at the University of Michigan were: name@UMich-MTS.Mailnet (from MAILNET and BITNET sites) name%UMich-MTS.Mailnet@MIT-MULTICS.ARPA (from CSNET and ARPANET sites) name@UM (from other UM or MTS sites) To send e-mail to a remote site, MTS users at the University of Michigan used addresses of the form: name@CARNEGIE (to Carnegie-Mellon University a MAILNET site) name@CARNEGIE.MAILNET (the more official, but longer name for CMU) name@WSU (to Wayne State University an MTS site) name@Wayne-MTS.Mailnet (the more official but longer name for WSU) name%brown@CSNET-RELAY.ARPA (to Brown University a CSNET Phonenet site) (to Cornell University a CSNET or ARPANET site) name@STANFORD.BITNET (to Stanford University a BITNET site) Over time as more and more computers had direct connections to the Internet the MAILNET relay approach was replaced with the more direct and more reliable peer to peer e-mail delivery and Internet domain style of e-mail addresses in use today (name''@um.cc.umich.edu). InfoX InfoX (pronounced "info-ex", originally InfoDisk) is a program for the Apple Macintosh developed by the Information Technology Division at the University of Michigan. It provides a modern user interface (menus, icons, windows, and buttons) that can be used to check MTS electronic mail, participate in CONFER II conferences, access the MTS User Directory, and create, edit, and manipulate files. InfoX adds Macintosh-style word processing features to the more traditional editing functions available from the MTS, $Message, $Edit, and CONFER command-line interfaces. One can use the standard Cut, Copy, and Paste commands under the Macintosh Edit menu to move text from any Macintosh file. Accounting and charging Each signon ID is allocated resource limits (money, disk space, connect time, ...) which control the amount and types of work that can be done by the ID. IDs can be limited to using just terminal sessions or just batch jobs or restricted to working during times of the day or days of the week when the rates charged are lower. Each signon ID is assigned an expiration date. Resources that can be charged for include: CPU time—charged in seconds of CPU time Memory usage—charged as CPU-VM integral ... e.g. 40 pages of virtual memory used for 10 seconds is charged as 400 page-seconds Printer usage—charged as pages of paper and lines of output (for line printers) or pages and sheets (for page printers) Disk space used—charged in