Adobe Flash Professional CS6 Adobe Flash Professional CS6 Classroom In A Book | Page 177

3 Holding down the Shift key, click and drag on the third node in the armature to
rotate it so that it points upward.
The third node of the crane rotates, but the first and second nodes do not.
4 Holding down the Shift key, click and drag on the last node in the armature (the
cranerope instance) so that it points straight down.
Holding down the Shift key helps you isolate the rotations of the individual
nodes so that you can position your poses exactly as you want them. The crane
now retracts by collapsing its different arm segments.
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Lesson 5
Articulated Motion and Morphing