The STRETCH command enables us to stretch entities including lines, arcs, elliptical arcs, splines and polyline segments.
The Stretch button is located in the Modify drop down menu and under the Extend button on the Modify toolbar.
To operate STRETCH, Select it. The default prompt says "Select entities to stretch by crossing-window or crossing-polygon".
These are the only two options that may be used for selecting entities to stretch.
The Stretch command only moves endpoints that are within the window or polygon, and leaves those that are outside in their current positions. Because of this, any entities that are wholly inside will be moved, not stretched.
Tip: Ensure that Ortho is on, select the Stretch button as shown in the movie.
Right click when no more entities are to be selected.
Hit enter to effect the stretch.