documentation of keyboard shortcuts for the app.
- A: Go to Hiragana.
- S: Go to Katakana.
- D: Go to Kanji.
- F: Toggle Settings.
- G: Toggle Alphabet Chart.
- T: Toggle Test.
- H: Toggle Writing Tutorial.
- R: Restart Writing Tutorial.
- E: Open tutorial.
- Space: Play Sound.
- Right Arrow: Next character and play sound.
- Left Arrow: Previous character and play sound.
- Up Arrow: Next Character.
- Down Arrow: Previous character.