Press Release 991201

  Calerga announces new versions of SysQuake and SysQuake Viewer, the
  software for understanding systems by interactive manipulation of
  graphics.

Lausanne, Switzerland, December 1st, 1999 - Calerga announces today
SysQuake 1.1 for Macintosh and Windows computers, a new version of the
application which helps understanding mathematics, physics and engineering
and enables improving easily the performance of technical systems.
SysQuake 1.1 is a free upgrade for licensees of SysQuake 1.0.

SysQuake 1.1 improves even further the interactivity with increased speed
and more ways to provide visual clues about the objects which can be
manipulated interactively. Several benign bugs have been fixed. The user
interface of the Macintosh version has been made more modern, to be in
phase with the latest operating system release, Mac OS 9.

SysQuake Viewer 1.0.1, the free application for viewing live interactive
graphics, is also replaced with a new version. SysQuake Viewer 1.1 is based
on the same code as SysQuake 1.1. It is available for Macintosh and Windows
computers, and as a prerelease version for GNU/Linux Intel computers.

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.

SysQuake 1.1 and SysQuake Viewer 1.1 are available immediately. For more
information, for a demonstration of SysQuake 1.1, or for downloading the
free SysQuake Viewer and interact with more than 30 live interactive
graphics, please visit the Calerga home page at www.calerga.com.


For more information:

http://www.calerga.com

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.