How can I send all tasks of one project to print?

You can send yourself the list of all tasks for any project via email. It will include task names, deadlines, assignments and completion status.
To request such an email:

1. Go to the project and click in the top right corner
2. Click Export tasks to email
3. Within a minute an email with the list of your tasks will be in your inbox

This function is available to Pro Premium subscribers.