When an author locks a page, what features are they restricting from other users?

When an author locks a page in AEM (Adobe Experience Manager), the primary function of that lock is to restrict other users from editing the page. This means that once a page is locked, any other users who try to access it for the purpose of making changes will be unable to do so until the page is unlocked by the author who initiated the lock.

This feature is crucial for maintaining the integrity of content when multiple authors may be collaborating on a project, as it ensures that one author's changes do not conflict with another's work. Locking a page provides a focused workflow where an author can make necessary edits without interference, preventing potential overlaps that could result in loss of work or content errors.

The other options do not accurately represent the functionality of the lock feature. For instance, locking doesn’t prevent page permissions from being changed in general; it specifically prevents editing. Additionally, the lock isn't limited to just preview mode, and it does not disable viewing of the page; other users can still view the page, but they cannot make edits until the lock is removed.