Every thing should be pretty easy !
Let's begin by the Main Window. It consists of three panels, each panel showing the keyboard, the instrument menu, the tonality box, the degrees grid.
First panel shows Scales, the second one shows Chords, the third one is Custom. This one allow you to show your own choose of notes on the keyboard.
You change tonality by clicking on the tonality list you want to use.
You can also change musical notations, using the Sharps and Flats buttons.
In the Scale panel, you can choose the scale type.
In the Chord panel, you can choose the chord type.
In the Custom panel, you choose the notes to show on the keyboard.
Custom panel will display a list of suggested chords forms when 2 or more notes are selected, as well as a list of suggested scales.
More, you can open several windows, showing for example a chord and his related scale.
At least, you can print or copy the keyboard to paste it elsewhere !
You can easily change the number of octave and the octave to use.
You can change and customize the keyboard appearance, via the "Preferences window".
Make sure to use Unicode Fonts to gets Sharps and Flats.
You can choose Font, Font size, first keyboard note, selection color and shape, Keyboard settings,...
If the Play button is pushed, the scale or chord will be played with the keyboard sound selected. You can change the sound in the menu and adjust the volume.
If you want to play descending, just press the shift key.
You can also hit the space bar to play.