This package contains a collection of symbols for typesetting
electrical wiring diagrams for relay control systems. The
symbols are meant to be in agreement with the international
standard IEC-60617 which has been adopted worldwide, with
perhaps the exception of the USA. It extends and modifies, when
needed, the TikZ-libray circuits.ee.IEC. A few non-standard
symbols are also included mainly to be used in presentations,
particularly with the beamer package.
