Philip Rothman (of NYC Music Services) summarized the basic note input keyboard shortcuts in his May article about Dorico: http://www.sibeliusblog.com/news/steinberg-announces-dorico-availability-in-q4-2016/
"Shortcuts are a mix of ergonomic and mnemonic shortcuts. These elements are also contained in the Write mode on the left side of the window:
- The letters A through G input notes
- The numbers 1 through 9 specify note duration (e.g., 5 is an eighth note, 6 is a quarter note, 7 is a half note)
- 0 represents a natural; – is a flat; = is a sharp
- The most common articulations are placed using the keys \ ‘
- Tuplets are placed using the semi-colon
- Grace notes use the slash key
- Augmentation dots use the period
- Rests use the comma
- Q is for chords
- I is for insert
- etc."
