The identified part represents an open string!:)
I think the answer is <span>The 1844 Treatise on Modern Instrumentation and Orchestration. This handbook was created by Berlioz to introduce the aesthetic of the expressive music of the opera. The handbook was also used as a principle on how to create similar style of Bach and to the other romantic composers during their time</span>
To complete the sentence, in Masaccio's Holy trinity, it can be seen that the vanishing point is centered in the middle of the horizon line which is directly in front of the viewer. In the arts, the vanishing point refers to the point where two parallel lines seem to converge.
