alt Hacker NewsNot guaranteed but easy, because Windows has mnemonics, where you can associate arbitrarily nested menus with actions, and each menu can have its own mnemonic key, so that you press ALT, then, say, "k", then, maybe "m" and so on, following along with the menus as they drop down.
This way it becomes easy to memorize key sequences; start by navigating with arrow keys, then eventually speed up as you memorize each menu item's mnemonic key, and if you ever forget, just look at the menu.
It was the keyboard-friendliest idea ever, without requiring any sort of terminal. I'd even say friendlier than MacOS (heresy!!) or, yes, VIM (burn the witch!!!)
Even if you didn't have mnemonics, you could use tab, arrow keys and alt if needed, to navigate, and space to "click" buttons and such.
So even if the developer forgot to configure mnemonics, which was as easy as prefixing a letter with ampersand, you could navigate by keyboard. Sometimes tedious but beats not being able.