This function can be used to determine the MIDAS version being loaded. It returns a text string description of the version. Version numbers are usually of form ``x.y.z'', where ``x'' is the major version number, ``y'' minor version number and ``z'' patch level. In some occasions, ``z'' can be replaced with a textual message such as ``rc1'' for Release Candidate 1. All MIDAS versions with the major and minor version numbers equal have a compatible DLL API, and can be used interchangeably.