I think it's a matter of time for me to be able to identify which software belongs to which OS, considering I wasn't following any ROM's development.
I could figure out the difference between 21xxx and 23xxx (OS 6.5 and OS 6.5.5) (as you mentioned, it is in the first post) but I still don't understand the other 3 numbers.
I appreciate your attention. Best regards.
Do you mean the last three numbers of the build, as in 21905 or 23569?? If so, that's just the specific WM OS build number. It's not a number NRG came up with, it's just what he happens to use in his rom for the current versions. When the "21XXX" or "23XXX" terms are used, they just imply the particular thread of rom development (i.e., 6.5.X or 6.5) -- the full number is the specific build. It's just part of a sequential numbering system Microsoft uses.
There is more information on this in the Chef Central forum here.
OR, are you talking about the last 3 numbers in the filename, like ...Jun.12.7z, for example?? That is just the date of the rom (June 12th) along with the 7zip filename extension.
Hopefully, I'm not off target again...