anchor.diff:  
   === Install Parcel
   
  -We will use Parcel to build our Elm application and we will use the result of this build in our Meteor application
  -
  -To install Parcel, run this command
  +We will use {url-parcel}[Parcel] to build our Elm application and we will use the result of this build in our {url-meteor}[Meteor] application
  +
  +To install {url-parcel}[Parcel], run this command
   
   ```shell
   meteor npm i -D parcel
  
positive.code: 
  `Package.onUse` says that our package:
  
  - is implemented to be use with Meteor `1.10.2`, 
  - uses the `modules` package because we will use `import {} from ''`,
  - will add the `dist/elm-app.css` file in the client when it will be loaded,
  - have a main js file for this package called `dist/elm-app.js`.
  
negative.code: ```
  
  The *app* folder will contain the sources of our Elm application (Elm, TS and CSS files).
  The *dist* folder will contain the result of the build made by {url-parcel}[Parcel].
  
  Because we will build with {url-parcel}[Parcel] and not with {url-meteor}[Meteor], we will create a new file at the root of the *meteor-elm-app* called *.meteorignore*
  
  ```shell
  #under meteor-elm-app
  