The change in the altitude angle can be compared to the upward and downward movements of the pen, such as in vertical strokes. It is also always proportional to the font size. The smaller the writing, the smaller the change in the altitude angle should be to ensure appropriate legibility. Children who tend to write larger letters will thus exhibit larger changes in this angle relative to the font size.
On the other hand, if the altitude angle hardly changes or remains constant, the pen is held at the same tilt throughout. This can lead to hand cramps and quicker fatigue. Therefore, it is important to have certain changes in the altitude angle to achieve a natural writing movement. A relaxed pen grip with targeted finger movements promotes this writing motion.