Current version:
  SpCalc 2.12a-20080419

Purpose:
  The Spline Calculus (SpCalc) program makes possible to fit smoothing spline
  on data giving complete numerical analysis of data having (experimental)
  uncertainty.

Documentation:
  The manuals can be downloaded independently from the author's web site. Two
  flavours are possible:
  - Spcalceo.pdf is the English user's guide optimized for online reading.
  - Spcalcep.pdf is the English user's guide optimized for printing.

License:
  Practically freeware. In detail, read the manuals.

Installation under DOS and Windows:
  - Make a directory for the files to be installed.
  - Unzip the content of spcalcdw.zip file into the desired directory. Either
      unzip.exe spcalcdw.zip, or alternatively
      pkunzip.exe spcalcdw.zip
    commands or any appropriate graphical programs (e.g. WiZ, WinZip, WinRAR)
    can be used.
  - After the installaion, the spcalcdw file can safely be deleted.
  For more information, read the manuals.

Installation under Linux (Note that this method is not well tested yet.
  Assistance of the superuser might be required. It is also possible that the
  programs do not work under some window managers, since only a few of them
  (KDE, fvwm2 icewm, windowmaker and xfce) have been checked.):
  - Make a directory within your home directory for the files to be installed.
  - Make the desired directory to the current one and copy one of the
    spcalcxf.tgz, spcalcxo.tgz or spcalcxo64.tgz files into it. The first two
    ones are for i386 compatible machines, the last one is for amd64
    architerture. The first one is for XFree flavour of X11 while the latter
    ones are for XOrg. The first one can practically be used under any Linux
    distribution with kernel 2.2 or higher but it does not understand the UTF
    characters.
  - Untar spcalcxf.tgz (or spcalcxo.tgz or spcalcxo64.tgz) into the desired
    directory with the
      tar -xzf spcalcxf.tgz   (or spcalcxo.tgz or spcalcxo64.tgz)
    command.
  - After the installation, the spcalcxf.tgz file can safely be deleted.
  - Two identical executables can be found in the package. The statically
    linked executable (the "spcalcx" file) surely works with any Linux
    distribution but it is huge. It may removed if the much smaller
    dynamically linked one (the "spcalcx.shared") works. The latter executable,
    however depends on many other packages (see the manual).
  There is a third option to use SpCalc under Linux. The Windows executable
  ("spcalcw.exe") runs smoothly through WINE.

  If more users want to use SpCalc, it is worth to put the executables into
  the /usr/bin or /usr/local/bin directory but it requires superuser rights.

Developing policy:
  Bug reports, questions, suggestions or requests are welcome through email.
  Two procedures will be applied:
  - In case of a bug report the authors try to fix it as soon as possible. The
    bug report must include the description of the problem, the version of
    SpCalc and (if necessary) the corresponding data file(s).
    Also, the questions will be answered as soon as the authors can do it.
  - In cases of suggestions or requests, some delay will likely happen. If more
    users ask the same thing, the development will be faster.