For functioning the expert is
required that on computer was installed and uncared-for
MetaTrader 4, expert was attached to Chart and
were enclosed all necessary options, allowing actions of
the expert. In operation expert computer must have a
constant connection to trade server.
The File by default, where kept experts, which
MetaTrader 4 must find at start:
C:\Program Files\MetaTrader 4\experts
Experts in editable form (source code) have an
extension mq4.
Example: expert.mq4
Experts in compiled form (source code of expert
translated in computer code) - such as OUR files,
have an extension ex4.
Example: expert.ex4