Which section of the SID chart is primarily focused on graphical layouts?

The section of the Standard Instrument Departure (SID) chart that is primarily focused on graphical layouts is the Planview. This area provides a visual representation of the departure route, showing the course that an aircraft should follow after takeoff. The graphical layout includes landmarks, navigational aids, waypoints, and altitude information, which together help pilots visualize and understand the specific flight path required for their departure.

In the context of a SID chart, Planview is essential because it allows pilots to interpret the route and altitude changes visually, ensuring they follow the correct trajectory while managing their ascent and transitioning from the initial departure phase. This graphical element is critical in enhancing situational awareness and contributing to safe flight operations.

Other sections serve different purposes; for example, the textual description details the procedures and instructions but does not focus on the layout in a visual format. Margin information typically provides supplementary details but is not the main focus of the route. The chart legends offer definitions and symbols used throughout the SID, aiding in interpretation but again not mainly focusing on the graphical layout itself.