> \cals@spanq@heights=macro: ->. > \cals@spanq@heights=macro: ->{20.0pt}. > \cals@spanq@heights=macro: ->{20.0pt}. % > 40.0pt. > 0.0pt. > \cals@spanq@heights=macro: ->{20.0pt}. > 20.0pt. > \cals@spanq@heights=macro: ->.