```js

!!book.generate name:'tfgrid4specs' title:'TFGrid Specs 4.0'
        url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/books/tfgrid4specs'


!!doctree.add
    url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/collections/tfgrid4specs'

!!doctree.add
    url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/collections/tech'

!!doctree.add
    url:'https://git.ourworld.tf/tfgrid/info_tfgrid/src/branch/main/collections/tfgrid4'

```