const tones = {
    metadata: { // optional
        // two properties are special: title and copyright, processed in special ways, other properties are arbitrary, blank spaces, quotation marks, and capitalization recommended
        title: "Aura's Diatonic Scales",
        copyright: "", // don't include "Copyright" word and symbol, it's done automatically, at the end of the content
        "Author": "Dawson Berry",
        "Description": `Set of <a href="https://en.xen.wiki/w/User:Aura/Aura's_Diatonic_Scales">Diatonic Scales</a>
            suggested by <a href="https://en.xen.wiki/w/Dawson_Berry">Dawson Berry</a> a.&thinsp;k.&thinsp;a. <a href="https://en.xen.wiki/w/User:Aura">Aura</a>`,
        "Usage":
		`<br/>The system has 7 natural diatonic scales rendered in rational intervals,
                 from Ionian to Locrian.<br/>
                 Each scale has 7 modes.<br/>
                 To change mode, Ctrl+Click on a note to make it a tonic.<br/>
                 A current mode name is shown as a row title.`
    },
    size: { width: 29, height: 7 },
    base: 440*16/27/4, //Hz "Deep C" based on 440 Hz A
    transpositionUnits: 12,
    rows: [
        [interval(1), interval(9,8),   interval(5,4),   interval(4,3),   interval(3,2),   interval(27,16), interval(15,8), repeat],
        [interval(1), interval(9,8),   interval(77,64), interval(4,3),   interval(3,2),   interval(27,16), interval(16,9), repeat],
        [interval(1), interval(16,15), interval(77,64), interval(4,3),   interval(3,2),   interval(8,5),   interval(16,9), repeat],
        [interval(1), interval(9,8),   interval(5,4),   interval(45,32), interval(3,2),   interval(27,16), interval(15,8), repeat],
        [interval(1), interval(9,8),   interval(5,4),   interval(4,3),   interval(3,2),   interval(27,16), interval(16,9), repeat],
        [interval(1), interval(9,8),   interval(77,64), interval(4,3),   interval(3,2),   interval(8,5),   interval(16,9), repeat],
        [interval(1), interval(16,15), interval(77,64), interval(4,3),   interval(64,45), interval(8,5),   interval(16,9), repeat],
    ],
    // optional:
    rowTitles: [
       ["Ionian", "Ionic Dorian", "Ionic Phrygian", "Ionic Lydian", "Ionic Mixolydian", "Ionic Aeolian", "Ionic Locrian"],
       ["Dorian", "Doric Phrygian", "Doric Lydian", "Doric Mixolydian", "Doric Aeolian", "Doric Locrian", "Doric Ionian"],
       ["Phrygian", "Phrygic Lydian", "Phrygic Mixolydian", "Phrygic Aeolian", "Phrygic Locrian", "Phrygic Ionian", "Phrygic Dorian"],
       ["Lydian", "Lydic Mixolydian", "Lydic Aeolian", "Lydic Locrian", "Lydic Ionian", "Lydic Dorian", "Lydic Phrygian"],
       ["Mixolydian", "Mixolydic Aeolian,", "Mixolydic Locrian", "Mixolydic Ionian", "Mixolydic Dorian", "Mixolydic Phrygian", "Mixolydic Lydian"],
       ["Aeolian", "Aeolic Locrian", "Aeolic Ionian", "Aeolic Dorian", "Aeolic Phrygian", "Aeolic Lydian", "Aeolic Mixolydian"],
       ["Locrian", "Locric Ionian", "Locric Dorian", "Locric Phrygian", "Locric Lydian", "Locric Mixolydian", "Locric Aeolian"],
    ],
};