RailwayRouteOptimization/scripts/Modify/Stretch/doc/Stretch_desc_en.html

<p>This tool stretches contours and dimension entities. This can also be
described as moving all endpoints within a given rectangular or polygonal area.

<br />If there is a selection of entities, this tool only affects the selected
entities. Otherwise, this tool operates on all entities in the given area. 
<br />
<img src="StretchFigure.png" class="figure" /></p>