~F8III. USING CRE.

	A. PRIMER ON RUNNING CRE.
	B. TELETYPE COMMANDS.
	C. SAIL INTERFACING.
	D. LISP INTERFACING.


PRIMER ON RUNNING CRE.


Single Image Contouring.

	The Stanford  copy of  CRE is  run by  typing "R  CRE".   CRE
displays  only  on a  III console,    however it  will  work (without
displays) when run  from a Data Disc  console.  The  command  scanner
is a  simple character jump table;  the command scanner will  type an
asterisk  when it is  listening for teletype  input. Carriage returns
following  commands  are  unnecessary  but  harmless;  most  commands
signal  their  completion by  displaying  something  or  by typing  a
carriage return. Some commands require arguments or file names.   The
question mark, "?", command  will display a summary of  all the other
commands.

	Command  characters may be  modified by the  control and meta
shift keys; such  keying will be  indicated in  this document by  the
prefixing  the characters  "α", "β",   and  "ε" to  indicate control,
meta or both meta-control shift keying respectively.

	The command "T" will take a four  bit television picture from
camera  number one. The command  "H" will display a  histogram of the
television picture.   The command  character SPACE  will refresh  the
image you had before the  histogram display. The command "C" followed
by a  list of octal numbers followed by a carriage return will make a
contour image and display it. Thus the teletype  discourse for taking
and  contouring  a single television image  should have the following
appearance:

↑C

.R CRE

*T
*H 
*C20 40 60
*

	All  the images  in  this  document were  made  with 3  or  7
equally  spaced contours; for which  cases the commands  "Q" and "αQ"
will automatically specify  contour cuts are  20, 40,  60 or 10,  20,
30, 40, 50, 60, 70 respectively.
~I1973,800;F8- 34 -