To supersede the requirements of Sentence 3.3.1.13.(2), which would otherwise not permit the use of locking devices, and permit electromagnetic locks on doors in access to exit doors if conditions of Sentences 3.4.6.16.(4) or 3.4.6.16.(5) are met.
To state the application of Sentences 3.4.6.16.(4) or 3.4.6.16.(5) for doors in access to exit.