Push Priority: Determines the behaviour of friendly ground units when they collide. Lower or equal relative push priority means the unit will flank / step aside to make way for units with higher push priority. Does not apply to units on hold position.
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Push Priority: Determines the behaviour of friendly ground units when they collide. Lower or equal relative push priority means the unit will flank / step aside to make way for units with higher push priority. Does not apply to units on hold position.
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No. You scale the parent and consequently all of its children. What mrklaus describes scales the selected children and leaves the global value intact.