Press Release 991102

  Calerga announces SysQuake Viewer for Linux, a free viewer for
  understanding systems by interactive manipulation of graphics.

Lausanne, Switzerland, November 2, 1999 - Calerga announces today SysQuake
Viewer for Linux, a port to the Linux operating system of the software for
understanding systems by interactive manipulation of graphics.

"SysQuake Viewer for Linux marks an important step for establishing
SysQuake as the best scientific software for education", said Yves Piguet,
manager of Calerga and developer of SysQuake. "With Mac OS and Windows,
the three most popular operating systems are supported."

SysQuake is a ground-breaking application for understanding and designing
complex systems by the use of interactive graphics. Interactivity lets the
user manipulate graphics, observe how phenomena are related, and change
parameters to improve the design of a technical device. Understanding how
initial conditions affect a simulation or how the parameters of a feedback
controller determine the behavior of a dynamic system is made much easier
than with the static graphics created by existing software.

SysQuake's powerful, yet easy-to-program computer language opens it to any
kind of application; SysQuake handles the user interface itself, letting
the developer concentrate on the specifics of his or her problem. It is
shipped with sample applications in the fields of automatic control, analog
and digital filters, model identification, physics, and finance. SysQuake
is not only useful for research and development--its ability to help really
understand the system beyond the graphics makes it the ideal tool for
teaching.

SysQuake Viewer can load "SQ files" (programs for SysQuake) processed by
SysQuake Signer. It offers interactive graphics which help tremendously
understand what the graphics represent and how they are related together.
It can be used as a helper application for World Wide Web browsers such as
Netscape Communicator; when a link to an SQ file is clicked in an hypertext
document, the SQ file is downloaded and opened automatically in SysQuake
Viewer.

One of the goals of the development of SysQuake has been to be as
independent as possible from the operating system and the graphical user
interface. This permits to develop SysQuake simultaneously for different
computer architectures, to offer cross-platform solutions, and to increase
the overall quality of each port by consolidating the robustnesss of the
code. Since the beginning, SysQuake has been available for Apple Macintosh
and Microsoft Windows computers. An open, free, and powerful environment,
the Linux/GNU operating system and the X/Window graphical user interface
(collectively known as "Linux") for Intel Pentium-based computers attract a
lot of interest from universities, individuals, as well as commercial
companies all over the world. The port of SysQuake Viewer is a logical
evolution aimed at consolidating it as the best software for teaching
science and engineering.

SysQuake Viewer for Linux 1.0 PR1, the first preview version, is available
immediately at www.calerga.com for free. Based on the same code as the
other versions of SysQuake Viewer, it can read the many interactive
graphics proposed on Calerga site, as well as those programmed by SysQuake
users and processed with SysQuake Signer. A final release is expected
shortly; like SysQuake Viewer for Macintosh and Windows, it will be free.

For more information:

http://www.calerga.com/SQViewer/index.html

Press Contacts:

Yves Piguet
Calerga
Chabliere 35
CH - 1004 Lausanne
Switzerland

E-mail: sysquake@calerga.com

Founded in 1998 by Yves Piguet, Calerga is committed to developing and providing
the best tools for understanding and designing dynamic systems.

Calerga and SysQuake are trade marks of Yves Piguet. Other marks are
trade marks or their respective owners.