[styles]
event_radius = 33
operator_height = 60
completion_height = 80

---a---b---c---d---e---f---g---h---|

-------------x|
             -------------x|
                          -------------x|

> windowWhen()

x = ---a---b---c-|

y = --d---e---f---g|

z = -g---h---|

x------------y------------z--------|
