v1.5 [May 27, 2008]
Version 1.0: first release.
Version 1.1: fixed VQT writing with unspecified quality.
Verision 1.2: minor bug fixes.
Version 1.3: better locale support.
Version 1.4: minor fixes. passed CTT tests.
Version 1.5: Vista support.
It is designed for client apps that need real-time access to production data.
The OPC server can be connected to an unlimited number of devices simultaneously
