Hi Pilou, you don't have to only click on curves individually - just use window select to grab many things all in one action, like this:



For a case like this when there isn't anything else in the model you can also use Ctrl+A or also in other cases using the Scene Browser Types section can be useful for selecting all objects of a certain type.

But often times if you have a lot of things in one area, just using a window selection as shown above can save a lot of clicks! :)

- Michael