It’s a cultural tic. Been around for decades. Those same folks also write “Apple ][“ to refer to the original Apple II.
It's a cultural tic to refer to something by its name.
You should check the actual manual: http://applelogic.org/files/AIIEREF.pdf
First, the cover uses italic sans-serif “I” characters, not forward slashes. It’s pretty clear if you’re familiar with typography.
Second, the body of the document uses neither. It uses the standard upright I character.
Is it it's name tho? Legally and culturally, do they have the power to name it?
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