Verb:lock

From eg

The REST verb LOCK prevents changes to a resource, e.g. verb:patches. It is exclusively applied to data and databases. The key trade is concerned with locks of a less abstract kind, which enforce the abstraction or command verb expressed by the verb:lock.

DAV variant LOCK is used to put a lock on a resource, with UNLOCK removing such a lock. WebDAV supports both shared and exclusive locks.

In wiki protocol LOCK has an identical definition, but includes publish property changes which in WebDAV would be accomplished with verb:proppatch.

Also in wiki protocol, especially tikiwiki, one locks rather than protect pages. This is a social metaphor, see mediawiki gronks for more on this.

A web page is usually locked by default, while a wiki page is often unlocked.

No means to verb:authenticate is required, as it can be considered an atomic combination of REDIRECT/LOCK/PUT (assuming one attempts to do something and then must login or otherwise authenticate - see verb:try for more on this general class of non-deterministic events, and redirect/lock/put for the general pattern.