One collapsed value range of an axis, drawn as a small gap with zigzag marks.
Last collapsed value (> start)
start
Optional
Room the range keeps: data units, or '<n>%' of the axis' kept data span (data extent minus the collapsed ranges). Default: '2%'
'<n>%'
'2%'
First collapsed value (data units)
One collapsed value range of an axis, drawn as a small gap with zigzag marks.