For example a sentance
The library can add several interaction methods like a a slider or onClick to any given elements for easily changing their values and comes with functions to bind these variables with the values of other elements.
Implementing Tangle is pretty easy, the library is well-documented and supported with examples.
For a more extensive example, see Ten Brighter Ideas.
For the motivation and philosophy behind reactive documents, see Explorable Explanations.
Or learn how to get started with Tangle.