Where is the vertex located on the head?

Excuse me, could you please clarify for me where exactly the vertex is located on the human head? I'm trying to understand the anatomical positioning of this point, and I'm having a bit of difficulty visualizing it. Is it at the top of the skull, perhaps in the center of the forehead, or is it located somewhere else entirely? I'd appreciate any additional information or guidance you could provide to help me better understand this concept.