A tester for my new ScummGlk engine reported a somewhat interesting problem playing Beyond Zork. In the attached save there’s an endurance indicator visible, and if you W, SW, SW, then the text description fills up the remaining area of the info box, and it displays a ‘[MORE]’ and Use ‘down arrow’ to scroll. However, it doesn’t seem possible to do so, since the up/down arrows are used to scroll through the history of entered lines in Frotz. I’ve tried as well using Windows Frotz, and it also doesn’t work, indicating it’s an issue with Frotz itself.
I’m wondering if anyone has any idea how the original Beyond Zork interpreter handled this? Is a down arrow key meant to interrupt and abort the read line with a special return value to indicate it? Or is the arrow key down meant to some kind of special processing without interrupting the line entry that Frotz currently doesn’t implement?