1.The Onus of Proof weighs on the claimant "onus probandi actori incumbit" and the denial of the respondent must be made under oath. 2.Evidence shall be established to prove a matter contrary to an apparent fact, and oath shall be taken to confirm an original fact. 3.Proof is be legally valid vis-à-vis all parties, while admission is affirmative evidence against the admitter only.
Interpretation and application must be checked against the official text and current version.