The version of this profile. The string representing the version MUST be in the form: M + \".\" + N + \".\" + U Where: M ...

The version of this profile. The string representing the version MUST be in the form: 
M + \".\" + N + \".\" + U 
Where: 
M - The major version (in numeric form) describing the profile's creation or last modification. 
N - The minor version (in numeric form) describing the profile's creation or last modification. 
U - The update (e.g. errata, patch, ..., in numeric form) describing the profile's creation or last modification.