GPIO and the 40-pin header: legend embedded in associated image is outdated

[DeeJay]

Ref: GPIO and the 40-pin header https://www.raspberrypi.com/documentation/computers/raspberry-pi.html#gpio

The second, horizontal, image in this section has an embedded legend reading "Raspberry Pi A+ / B+ and Raspberry Pi 2/3/4 pin numbers"

This leaves some doubt as to valid pin numbering for Pi400/500 boards, RPi[5] boards, and CM boards.

( For example, see this recent Forum thread - https://forums.raspberrypi.com/viewtopic.php?t=388974 )

[lurch]

I suspect that the "Raspberry Pi A+ / B+ and Raspberry Pi 2/3/4 pin numbers" wording was originally added to clarify that this is the pinout for Raspberry Pis with a 40-pin GPIO header, as opposed to the very earliest Pi 1 Model B and Pi 1 Model A which had a 26-pin GPIO header. However as we no longer document the 26-pin GPIO header, and the pinout on all 40-pin GPIO headers is identical, perhaps it makes sense to simply remove that text (and also the dotted-line, which indicated where the 26-pin GPIO header ended).

[njhollinghurst]

While we're at it, it might slightly reduce ambiguity if the key text of that image read "GPIO numbers" rather than an unqualified "pin numbers"? It wouldn't kill us to mark the numbers 0 and 1 either (in white, with the existing note).