{
  signal: [
  {name: 'clock',       wave: 'P.|||.', phase:.5},
  {name: 'okToWrite',    wave: '01..|.'},
  {name: 'writeReq',     wave: '0..1|.', node: '...a.'},
  {name: 'readyToWrite', wave: '0...|1', node: '.....b'},
]
  ,edge: [ 'a~>b see note']
  ,config: { hscale: 2}
  ,head:   {text:'Write sequence 1: writeReq following okToWrite'}
  ,foot:   {text:'Note: readyToWrite follows okToWrite && writeReq in at least Y clocks'}
}