Which element is not typically included in a crime scene diagram?

The inclusion of names of attendees at the crime scene is not typically a standard element in a crime scene diagram. Crime scene diagrams are primarily designed to represent the physical layout of the scene, convey the positioning of evidence, and illustrate key features relevant to the investigation.

The direction of North is crucial as it provides orientation to the diagram, ensuring that individuals reviewing the scene can accurately understand spatial relationships. Accurately indicating distances between evidential components is essential for reconstructing events and understanding how evidence interacts within the context of the crime scene. Additionally, marking the location of significant features, such as entry points or landmarks, is vital for contextualizing the scene and identifying potential pathways of movement or interaction.

While names of attendees may be important for record-keeping or witness statements, they do not contribute to the spatial representation and evidential analysis that a crime scene diagram aims to provide. Thus, the correct answer highlights a component that falls outside the primary intent of a crime scene diagram.