Use of Capsicum with Firefox

Message from firefox-60.0.2,1 , after update/install,
Code:
Some features available on other platforms are not implemented:
- Native audio (OSS backend is incomplete, doesn't support WebRTC)
- Encrypted Media Extensions (requires Widevine CDM binary)
- Process sandboxing (requires Capsicum backend)
- Reduced memory usage (requires mozjemalloc)
....
Is there any user interface for Capsicum or this has to be implemented by port developer ?
I understand that it is part of base system.The man page is not of much help.
Is there any use case for Capsicum?
 
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