Com S 227 -- Introduction to Computer Programming	August 9, 1993

		PRINTING YOUR FILE ON PROJECT VINCENT

   A file containing your homework, as typed in with emacs, is an ASCII file.
An ASCII file is simply one that contains normal characters.
Only ASCII files can be printed using the ``printserver'' on Project Vincent.
Other files, such as the output of a compiler, cannot be so printed.
However, most of the files you will deal with, including your programs
and transcripts of Scheme sessions are ASCII files.  If you can read it with
emacs or look at it with ``cat'' then it is an ASCII file.

   The normal way to print an ASCII file is to send it to one of the
public printers on campus, and then go there yourself to retrieve your
output.  If you are already in one of these rooms, just send your file
to that printer.  For example, if you want to print the file ``hw1.txt''
on the printer in Durham 89, you use the command
	lpr -Pdu89 hw1.txt
For a different printer, substitute its name for ``du89'' above.
For a different file name, substitute its name for ``hw1.txt'' above.

   To check the progress of your print request in Durham 89, use the command
	lpq -Pdu89
For a different printer, substitute its name for ``du89'' above.

   The following table lists public printers available on the printserver.
There is no charge for these printers, but most of them have a 2400 line limit.
The printers are self-service; you need to remove the output
from the printer yourself.

   Be sure that a printer is on-line before you direct output to it.  

Public printserver printers (updated 9/5/91):

  Location              Printername     | Location               Printername
  -------------         --------------  | -------------          -----------
  Buchanan 1627         bu1627          | Library 36             lb36 (lb36a,
  Durham 89             du89            |                              lb36b)
  Durham 139            du139 (du139a,  | Maple-Willow C3118     mwcom
                               du139b)  | Physics 53             py53
  Friley 2415           fr2415          | Roberts 2220           rb2220
  Heady Hall 62         heady           | Snedecor 307           sn307
  Heady Hall 64         he64            | Sweeney 101            sw101
  Kildee 1              kh1             | Vet Med 2255           vetmed
  Knapp-Storms Commons  kscom           | Wallace-Wilson Commons wwcom
  Lagomarcino E116      lge116          | 

An up-to-date list of printers is available on-line by using
the olc program, typing ``answers'',
then selecting ``Answers about Basic Project Vincent Services'',
then selecting ``Printing'', then selecting ``Public printers''.

The Computation Center operates a LPS20 PostScript laser printer.
Although this printer is located in 95 Durham Center,
output is placed in ``BINS'' in 139 Durham
(near the operations submittal desk).  This printer is capable of duplexing
and currently prints on either ``3-hole'' or ``bond'' paper.
 
Printing on the LPS20 requires a ``GRANT'' to charge against.  Every user is
provided with a subsidy grant named ``subsidy_<username>''.
For students this is a $20 grant
which is refreshed each semester (thanks to computer fee monies).

Look in sections 5.1-5.2 of your ``Users Guide to Project Vincent''
for details on how to send a printout to the LPS20.