To install releases and upgrades of GT.M, your VMS version must match the VMS version for the GT.M distribution. This version information is provided on the first page of the release documentation that accompanies your GT.M release. The term release refers to installation of GT.M on your system for the first time, or of new versions of GT.M. The term upgrade refers to maintenance releases of GT.M that modify, but do not replace, an existing version.