How to stretch a rectangle on only one side?

Often it is necessary to stretch a rectangle (or other entity) on only one side. For example, the left edge should stay fixed, the right edge should move further right, and the center-point ("move-about point") should move halfway to the right.
Under AutoSketchv9, for a pre-existing rectangle, handle-pulling the right edge causes symmetric stretching. Both the right and left edges both move outward, and the center-point ("move about point") stays fixed. This is NOT the necessary one-sided stretching.
Could this be related to some setting, such as Drawing options, snap-to grid, etc?
By contrast, when I use the rectangle tool to draw a new rectangle, and immediately do handle-stretching, then the stretching is one-sided. Unfortunately this does NOT work to stretch a pre-existing rectangle.
Also by contrast, under ASv8, handle-stretching does provide one-sided stretching.
I have tried to approximate one-sded stretching by handle-pulling symmetric stretching followed by moving the entity. However this makes it very clumsey achieve the required alignment & size.

 

There must be a setting. My AS 9 rectangles stretche the same as
versions 8 and 6.01.

 

Right click on the about point. Uncheck the fourth entry: Scale About Here.
This menu is the only access to this command, and it often gets checked
accidentally.

Rod

one side. For example, the left edge should stay fixed, the right edge
should move further right, and the center-point ("move-about point") should
move halfway to the right.right edge causes symmetric stretching. Both the right and left edges both
move outward, and the center-point ("move about point") stays fixed. This is
NOT the necessary one-sided stretching.and immediately do handle-stretching, then the stretching is one-sided.
Unfortunately this does NOT work to stretch a pre-existing rectangle.symmetric stretching followed by moving the entity. However this makes it
very clumsey achieve the required alignment & size.

 

There are two ways I have found to do this so far:

1)
- R-click on the central "about point" and move it to the opposite corner from the one you want to stretch
- Grab the side handle and pull
OR - hit "R" and click on a side handle to type in an exact ammount

2)
- Create a "marquee" over the side of the rectangle you want to stretch
- Select the rectangle
- use the "stretch" tool and click on the point you want to stretch from
- select the point you want to stretch to
(either of these points can be relative, absolute or snapped.)

The first method is quick and easy, the second allows you to skew the rectangle and works for any shape or line within the marquee.

(Note: the marquee remains on the drawing, but does not really affect anything unless you want to stretch or scale again. Best to clear it once finished to avoid confusion.)