proceeding, or any parole proceedl119, lnvoMng the crime or of any 1relaasa or escape of the accused; (3) The right not to be excluded from any such publfo oourt prooeedin9, unless Iha court, after receMng cteer and oonvlnclng evidence, determfnes that testimony by the vlctlm would be materlall;' altered if the ,,10111