```js

!!book.define name:'asimov' title:'Asimovs Internet 4.0'
        url:'https://git.ourworld.tf/threefold_coop/info_asimov/src/branch/main/asimov'


!!book.collection_add book:'asimov' name:'asimov'
        url:'https://git.ourworld.tf/threefold_coop/info_asimov/src/branch/main/asimov'



```