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-.\" Copyright (c) 1980, 1993
-.\"	The Regents of the University of California.  All rights reserved.
-.\"
-.\" Redistribution and use in source and binary forms, with or without
-.\" modification, are permitted provided that the following conditions
-.\" are met:
-.\" 1. Redistributions of source code must retain the above copyright
-.\"    notice, this list of conditions and the following disclaimer.
-.\" 2. Redistributions in binary form must reproduce the above copyright
-.\"    notice, this list of conditions and the following disclaimer in the
-.\"    documentation and/or other materials provided with the distribution.
-.\" 3. All advertising materials mentioning features or use of this software
-.\"    must display the following acknowledgement:
-.\"	This product includes software developed by the University of
-.\"	California, Berkeley and its contributors.
-.\" 4. Neither the name of the University nor the names of its contributors
-.\"    may be used to endorse or promote products derived from this software
-.\"    without specific prior written permission.
-.\"
-.\" THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
-.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
-.\" ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
-.\" FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-.\" DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
-.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
-.\" HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
-.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
-.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
-.\" SUCH DAMAGE.
-.\"
-.\"	@(#)intro.0	8.1 (Berkeley) 6/4/93
-.\"
-.tp
-.(l C
-.ps 12
-.ft B
-Screen Updating and Cursor Movement Optimization:
-.fl
-A Library Package
-.ft
-.ps
-.sp
-.i "Kenneth C. R. C. Arnold"
-.i "Elan Amir"
-.sp
-Computer Science Division
-Department of Electrical Engineering and Computer Science
-University of California, Berkeley
-Berkeley, California  94720
-.sp 3
-.bi ABSTRACT
-.sp 2
-.)l
-.(q
-.pp
-This document describes a package of C library functions
-which allow the user to:
-.ie t .ip \ \ \ \(bu
-.el .ip 1)
-update a screen with reasonable optimization,
-.ie t .ip \ \ \ \(bu
-.el .ip 2)
-get input from the terminal
-in a screen-oriented fashion,
-and
-.ie t .ip \ \ \ \(bu
-.el .ip 3)
-independent from the above, move the cursor optimally
-from one point to another.
-.pp
-These routines all use the
-\*(tc \*(db to describe the capabilities of the terminal.
-.)q
-.b Acknowledgements
-.pp
-This package would not exist
-without the work of Bill Joy,
-who,
-in writing his editor,
-created the capability to generally describe terminals,
-wrote the routines which read this \*(db,
-and, most importantly,
-those which implement optimal cursor movement,
-which routines I have simply lifted nearly intact.
-Doug Merritt and Kurt Shoens also were extremely important,
-as were both willing to waste time listening to me rant and rave.
-The help and/or support of
-Ken Abrams,
-Alan Char,
-Mark Horton,
-and
-Joe Kalash,
-was, and is,
-also greatly appreciated.
-.i "Ken Arnold    16 April 1986"
-.pp
-The help and/or support of Kirk McKusick and Keith Bostic (public vi!)
-was invaluable in bringing the package ``into the 90's'', which now 
-includes completely new data structures and screen refresh optimization 
-routines.
-.i "Elan Amir   29 December 1992"
-
-
-
-