Non-Pocket version, because screw that enshittified plugin gone feral. Give me back Read It Later, you cowards.
The Apple II was one of the first personal computers to integrate a blinking cursor into its systems.
The Apple I also had a blinking cursor. (And would support blinking characters in general, but I think the video hardware as-designed ignores when the CPU tries to use it.)
At first, the cursor was stuck to the bottom of your text document, Haigh says. But the invention of the mouse in 1964 by Douglas Engelbart and the addition of cursor or arrow keys to keyboards made it easier for typists to move through the document with ease.
The history of cursor keys is also a whole thing. I only know about the Apple I via modern emulator nonsense, so when I wrote the only action game on the platform, people with repro hardware couldn't play it. It ran just fine... but the machine has no left or right keys. A quick hack checked for < and > instead.