Multiple dependent actions on a single line
More than one data flow diagram bubble may appear in the same line:
Aircraft? max separation = Aircraft(1, +^Altitude).Altitude - Aircraft(1, -^Altitude).Altitude
All of the actions in the data flow diagram above can be represented in a single line of Scrall.
As you can see on the diagram (and in the Scrall text) there is no data dependency between the two select/project actions so they could be executed in either order.