The version describing the creation or last modificationof the specification. The string representing the version shall be ...

The version describing the creation or last modificationof the specification. The string representing the version shall be in the form: 
M + \".\" + N + \".\" + U 
Where: 
M - The major version (in numeric form). 
N - The minor version (in numeric form). 
U - The update (e.g. errata, patch, ..., in numeric form).