Education: show JavaScript examples with code the student can run.

Runbook: provide support staff executable blocks they can modify to record how they are fixing a support fire.

API docs: show off that NPM package you built with real examples the user can modify by putting in their own data.

That's off the top of my head.

Less space than a Nomad. Lame.

No use case that you or I can think of. Must be useful though.