Shrinking and stretching objects in LisaDraw is described
on pp. B19-B21 and C75-C76 of the LisaDraw manual
on pp. 137-138 of the Lisa 7/7 manual
To prevent distorting your objects when you stretch and shrink
them, use the handles in the middle (not in the corners) of each side,
moving each of the handles the same distance from the center. For example,
if you have a 2 x 2 square that you wish to increase to 4 x 4, take
the handle at the middle of each side and move it an inch out from the
center. To stretch or shrink several objects, group them first.