Role

Specifying role: 'start' makes the page behave as the start page even though the ID is not start.

Go to user-page Go to invention-page

Fry

This is the start page but the ID is user.

What-If-Machine

<div data-bind="page: {id: 'user', role: 'start'}">
    <h2>Fry</h2>
    This is the start page but the ID is <code>user</code>.
</div>

<div data-bind="page: {id: 'invention'}">
    <h2>What-If-Machine</h2>
</div>