I’ve written a routine in 2020.2.10 which allows the free recall of up to 20 items (in the demo the correct answers are the numbers one to twenty). Arrow keys, mouse and backspace can be used for navigation, but not the edit keys (specifically delete).
I’ve got it working pretty well online but the formatting could do with some work locally.
This might well be superseded by the editable text box in the near future, but for now I’m happier with a coded solution.
Enjoy! I’m planning to add more public experiments to the same group in the near future.
A collection of curated and well-developed experiments; niiiice! Might be handy to make some kind of index (or meta-index), then I can join in with my demos.