Spring RTS Engine

More help:
when I played with earlier versions of Spring (0.78, 0.83), I could draw a curved line of units (shift + left mouse clicks and drag). Now it appears a line highlights that line of the units will have, this line is always straight.
can I restore the old behavior?
Thanks

The curved line is a plug-in widget. It was never part of the core springrts framework, but the game within spring you were playing (I don't know which that would be). Whatever game you're playing now has apparently removed the widget in recent releases.

The widget is called CustomFormations. It may be listed already in your Widget menu (F11 key to open it) and simply not enabled.

Perfect.
thanks