{
signal: [
  {name: 'clock',       wave: 'pP|..',phase:0.5},
  {name: 'okToRead',    wave: '01...',},
  {name: 'readReq',     wave: '0.10.',node: '...a.'},
  {name: 'readyToRead', wave: '0....'},
],
 edge: ['a See note']
  ,config: { hscale: 2}
  ,head:   {text:'Illegal read sequence, deassertion of readReq before readyToRead'}
  ,foot:   {text:'Note. Once started, commit until readyToRead is asserted'}
}