Architecting and designing
  
Access Control filters
If you use the Access Control utility to lock, check out, or freeze objects, you can then use the Access Control filter option to hide or display objects in any of those states. These filters can be found in the Explorer.
Locked status filters:
Not locked
Locked by you
Locked by others
Frozen or checked out status filters:
Not frozen and not checked out
Frozen by you
Frozen by others
Checked out by you
Checked out by others
Filtering items which are frozen or checked out
This will include items that are frozen or checked out to the current or a parent workspace. See also Access Control command.