Is is possible to add tag, notes or labels to backups made by Time Machine? Is it possible to add label, tag or notes to Time Machine backups. Lets say after fresh reinstall of OS X - label it as "Base System 1" then after few days (at some point with more software/work) "Designer Workstation - Base System 2" etc. 

So, in case if system needs to be restored to a known good state (because of crash or otherwise). It would be easy to look at tag/notes and decide which one to restore. Than to just look at date-time stamps.

I know full bootable clones are the way to go. In addition to one bootable clone, it will be great to have multiple tagged restore points in Time Machine.

Is there a way to achieve this?
No, it's not possible to tag any specific revision in TimeMachine.