Keyboard Shortcut Trainer
Drill the keyboard shortcuts of the tools you live in. Pick one of 13 profiles, Vim fundamentals to Generic OS shortcuts; read the task, type the key sequence (space-separated, e.g. d w or Ctrl+B), and get graded correct, partial, or incorrect.
The Markdown Editor is a real writing surface with a live preview, where the Generic OS deck's select, cut and undo chords do what the deck says they do. For the shell decks, Pipeline Factory assembles the kind of command line the Bash readline drills are teaching you to edit.
About this lab4 paragraphs
Every task and result is plain text; no visual keyboard required.
Grading normalises what you type, so Ctrl+B, ctrl-b and C-b are the same chord and spacing between chords does not matter. What it will not do is accept a different key that happens to reach the same place: the deck is asking for one sequence.
The decks are recall drills, not documentation. They cover the motions worth having in muscle memory rather than every binding a program defines, and a profile you already know will run out of new material quickly.
The trainer used to answer at a second address under /toys/. It does not any more: every page here has one address, so an old link to it will not resolve.