Initial part
Stretching using the default trim plane locations (extents of the part)
Stretching this way causes both ends to stretch symmetrically.
Repositioning the trim planes or triad allows you to select local regions of the model to stretch.
To move the trim planes, move the pointer
over a trim plane to display the 
pointer, then drag the
plane. You can also set the Stretch distance
in the PropertyManager.
Result of stretching of a local region confined by the trim planes.
