When distributing objects with the Align Objects command, the first object and last objects do not move. MacDraw II / Pro only moves the objects between the first and the last. Therefore, when using the Distribute feature, first position the first and last objects correctly in the series of objects to be distributed. Then use the Distribute command to position the objects in between.
Distribution by height or width places an equal distance between the boundary of each object.
Distribution by center distributes objects such that the distance between the center of one object and the center of the next object is equidistant for all objects.