State Notation Language and Sequencer
EPICS (Experimental Physics and Industrial Control System) is a toolchain allowing the user to create a professional control system infrastructure. EPICS is developed by the Argonne National Laboratory located in Lemont, Illinois, USA, the Berliner Elektronenspeicherring-Gesellschaft für Synchrotonstrahlung mbH (BESSY) from Germany and others.
It is licensed as open source software under the EPICS Open License (http://aps.anl.gov/epics/license/open.php) which is very similar to the BSD license but contains some additional privileges for the US government funding the work on the project.
The State Notation Language (SNL) provided by this package, is a domain specific programming language that smoothly integrates with and depends and builds on EPICS base. This project defines SNL and provides an implementation, consisting of the SNL compiler and runtime system.