first movement: at the very beginning, a dive towards an immaculate surface which will quickly be crossed out by black or blue pencil lines.
second movement: a mixture of fine lines, blue hatching and light rays.
third movement: a black band with white stripes is added to the black and blue hatching.
fourth movement: with the exception of the final flight towards the firmament, the movement is based entirely on one of the motifs appearing in the previous sequence 'calm sea and happy voyage'. In its flat version, this pattern is the result of the superimposition of small elementary hatchings; differentiated movements of these elements in space, in terms of position and orientation, allow the construction of 3D objects around or through which the camera can move under variable lighting. Originally black, some hatchings are sometimes coloured grey or blue.