Dust.js is a JavaScript templating engine, barely maintained in the past years. Even the interactive tutorial in the official website is broken on Chromium browsers and has really strange behavior on Firefox. This reference sheet is a quick-to-look reference if you need to work in a project that still uses Dust.
To reference a variable, use curly brackets.
<div>This is the value of a variable: {myVariable}.</div>
<div>You can use dot-notation to access object's attributes: {myObject.attribute}</div>