Keyboard Windows 

Keyboard windows contain an arbitrary number of marimba style keys.  Each Key may be presented in a variety of representation styles: 

	Pitch
	Cents Relative to a Reference Key
	Cents Relative to the Previous Key
	Hertz
	Ratio Relative to a Reference Key
	Ratio Relative to the Previous Key
	Interval from Reference Key
	Interval from Previous Key
	MIDI Key Number
	User Label (arbitrary names, i.e Do, Re, Mi)
		 
The desired representation style is chosen with the upper pop-up list in the Tuning Panel (Tuner... in the Tools menu. See Tuning a Keyboard).   The selected Key's value in the chosen representation appears in the display above this pop-up list.  
	
Each window has its own Reference Key (indicated with an R) from which base relative tunings are derived. The Reference Key is changed by selecting a Key and choosing the Reference button in the Tuning Panel.  Keys are moved within or between keyboards with standard cut, copy, and  paste operations.  Windows may be resized with the resize bar, and Key sizes may be changed by resizing their window with the Command-Key key pressed.

Keys are played by clicking with the mouse.  The Key's note is sounded when the mouse button is pressed and ended when the mouse button is released.  The Command-Key may be used as a sustain pedal, allowing Keys to ring after the mouse button is released.
There is also a Sustain Pedal button in the Tuning Panel for holding sustain on.
 
 Representation Style Formats
 
 Pitch 	pitchLetter[sharp or flat]octave. 
 
	For example: 
 	ef4	E flat above middle C
	gs3	Gsharp below middle C
	bs8	B sharp five octaves above middle C

Hertz and Cents are represented in decimal numbers. 

Cents are rounded to the nearest integer.

Ratios 	Numerator/Denominator

	For example, 
	3/2	Just perfect fifth
	5/4	Just major 3rd

Interval

	uni	unison
	m2	minor second
	M2 	Major second
	m3	minor third
	M3	Major third
	P4	Perfect fourth
	aug4	augmented fourth
	P5	Perfect fifth
	m6	minor sixth
	M6 	Major sixth
	m7	minor seventh
	M7 	Major seventh
	oct	octave
	m9	minor ninth
	...

MIDI Key	MIDI KeyNumber assignment
			Same format as Pitch.

User Label	An arbitrary label. 

	For example, 
	Do, Re, Mi, Fa 
	Ding, Dong, Deng, Dung, Dang