X-BASED ABACUS
  ============== Abacus X widget, V5.4


  It has been tested on the following platforms:

    Sun4 SPARC   SunOS5.5.1  X11R5,X11R6
    DEC  VAX     VMS6.1      X11R5
    DEC  ALPHA   VMS6.1      X11R5
    SGI          IRIX 5.3    X11R5
    HP   HPPA1.1 HPUX9.01    X11R5
    PC   486     Linux1.2.13 X11R6

  The most updated source could be found on ftp.x.org under
  /contrib/applications .  If you have to do any editing to get
  this to work, please mail me the changes (see bottom of file).

HOW TO BUILD?

  An ANSI C compiler is required for build.

  To build, it should be easy.  There are 3 choices.

    configure:
      Relatively new so there is a good possiblity that it is not set up
      correctly on your system.  You may want to set SCOREFILE and DATAFILE
      in Makefile.in .

      configure ; make

    imake:
      Sometimes this is not setup correctly by the distributer ... i.e. not
      my fault.  You may want to set SCOREFILE and DATAFILE in Imakefile .
      If you have Motif you may want to do this quick edit in the Imakefile:
        Uncomment line "#define XpmLibrary".

      xmkmf ; make

    make.com (VMS users only):
      You may want to set SCOREFILE and DATAFILE in make.com .

      @make

  Then just run "xabacus" (or "xmabacus" if you have Motif).

  You should have Abacus.ad (or Korean.ad) copied to $(HOME)/Abacus or 
  /usr/lib/X11/app-defaults/Abacus to run, especially if the background
  is similar to the beads. Edit this file for your preferences.  For
  monochrome, the bead color needs to be brighter.  You might want to
  move xabacus into /usr/bin/X11 (or wherever your X binaries are).
  You might also want to move xabacus.man to /usr/man/man1/xabacus.1

  Essentially, this is a proof by induction that a computer is more
  powerful than an abacus, since a computer program can contain an abacus.
  (But then again, you can simulate a computer within a computer, so what
  does that show).  Actually, with a real abacus, one can move more than
  one row at a time with 10 fingers.  But on the other hand, a real abacus
  does not have the current sum displayed as an integer.

  Try resizing the abacus. Notice the shape and size change of the beads.

  Try copying the file Abacus_korean to $(HOME)/Abacus (where Abacus is
  the file name) and running xabacus again.  You now have the faster
  (and more cryptic) Korean Abacus.

  Keep in mind that the Abacus is a widget that can be simply stuck in
  other X programs. (If you find a use for this, let me know).

  Refer to the man page for detailed command line options.

FOUND A BUG?

  Send bugs reports and fixes to the author. For bugs, please include
  as much information as to their location as possible, since I may not
  be able to duplicate the problems with my limited resources.

    David Albert Bagley, bagleyd@bigfoot.njit.edu

HISTORY

  [Jan 01, 97]  V5.4: configure, man page updates.
  [Apr 22, 96]  V5.3: You can now see beads move one unit space at a time.
    This is governed by a new resource, "delay".
  [Feb 12, 96]  V5.2.1: beads now invert when pressed, wprintf name may
    conflict with other UNIX libraries - changed to
    motif_printf, keyboard may not work with motif - fixed.
  [Jan 31, 96]  V5.2: Dynamic number of bars (well, the widget is dynamic
    but xabacus.c limits it to around 300 for the title text),
    fixed another bug when resized (negative radius circles).
  [Dec 15, 95]  V5.1: Fixed a bug when resized.
  [Sep 30, 95]  V5.0: Xt/Motif, your choice.
  [May 16, 95]  V4.10: Warnings removed from Sun's cc and lint.
  [Mar 13, 95]  V4.3: Removed lint warnings and added a VMS make.com .
  [Nov 08, 94]  V4.2: Removed gcc -Wall warnings.
  [Jun 03, 94]  V4.1: R6.
  [May 07, 94]  V4.0: Xt version.
  [Feb 03, 93]  V3.0: Motif version.
    I got some good ideas from Douglas A. Young's book:
    "The X Window System Programming and Applications with
    Xt OSF/Motif Edition", particularly his dial widget.
    I got some good ideas on presentation from Q. Zhao's
    tetris.
  [Dec 17, 91]  V2.0: XView version.
  [Feb 14, 91]  V1.0: SunView version.