Question: In SMS-related graphics, as per 3GPP specifications, where is the reference point typically located for a line element, such as a polyline, circular polyline, or Bezier polyline?
Option 1: At the centroid (geometric center) of the line
Option 2: At the starting point of the line
Option 3: At the midpoint of the line
Option 4: Dependent on the type of polyline (e.g., start for polylines, center for circular)
Explanation: According to the specifications, a line element's reference point, which defines its location, is situated at its starting point. This is crucial for accurately positioning and rendering graphical elements in SMS messages, ensuring consistency across different devices and platforms.