What is ERS?	ERS is a set of tools for the analysis of discrete event systems. It has been developed so far in the Mistral and Sloop projects of INRIA. ERS is a package under development. It is made available to researchers interested in Discrete Event Systems in order to obtain feedback on (possible) bugs, suggestions for improvements, and even contributions in the form of code improvements or additional tools.
What does ERS?	ERS contains tools for creating graphical representations of some discrete event systems: Petri Nets (snapshot), Task Graphs, Heaps of Pieces (snapshot), Interaction Graphs. analyzing the systems and computing performance measures (throughputs and growth rates, waiting times, makespans etc.) transforming systems from one representation to another.
How to get ERS?	ERS is available in several forms: Compilable (Unix platforms) ERS_0.2.2.tar.gz With binaries for LINUX ERS_0.2.2_LINUX.tar.gz With binaries for SUN Solaris ERS_0.2.2_SUN4SOL2.tar.gz With binaries for DEC ALPHA ERS_0.2.1_ALPHA.tar.gz (version 0.2.1 plus patch. The distribution contains some installation instructions. There is a rather voluminous yet incomplete reference manual
How to contribute to ERS?	If you: encounter a problem while downloading, compiling, or installing ERS, find a bug in one of the tools have a suggestion for improving ERS's functionalities wish to contribute to ERS with a tool of your own (graphical user interface, solver, anything) wish to be informed of the evolution of ERS and its new releases send a mail to Alain Jean-Marie.

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