In the blue, green and purple nodes you submit answers to your tasks. This looks a bit different depending on whether there are multiple questions or just one. In all the nodes however, there is a response field for you to write an answer in. You can also choose to answer by submitting sound or a film, or by uploading a film or link to a page. If you add a link to Vimeo or Youtube, the film will be embedded in your answer.
You can edit the text, add a list or change the size and color of it. If you add a picture you can change the size of the picture and choose to put it to the left or the right.
You can also attach documents that you have worked in, with for example writing a longer text or creating a slideshow.