i)    disclosure
(1)    511 (1) partial disclosure as a waiver
(a)    elements
(i)    holder of privilege
(ii)    voluntarily discloses or consents
(iii)    a significant part of the privilege
(2)    burden to prove disclosure, significant, voluntary
(a)    civil:  burden to show disclosure wasn’t a waiver
(b)    crim:  discovering party to show the disclosure was a waiver (intentional relinquishment of a known rt in crim cases)
ii)    512:  no waiver
(1)    if erroneously compelled disclosure, no waiver
(2)    or disclosure made w/o opportunity to claim the privilege (e.g. eavesdropper)