To add a glue point to a object, simply enter glue mode by selecting the draw window menu, then the object sub-menu, then the 'add glue points' option. This puts IPAD into glue mode and allows you to select positions on any object which should have a glue point. To place a glue point on an object move the mouse to the position on the object that is to have a glue point, then press the left mouse button and the object will become highlighted by being redrawn in a dithered form. While still holding down the left mouse button, confirm by clicking on the right mouse button and a glue point will apear. It is not necessary to keep releasing and pressing the left mouse button. The mouse can be repositioned while the left mouse button is held down, as you do so you will notice that objects become highlighted and un-highlighted as the mouse touches then comes away from the object.BEWARE:
glue points belonging to an object that belongs to a group follow the shape and size of the object as it is modified by the group. glue points belonging to the group follow the shape and size of group bounding rectangle. glue points belonging to a group are drawn as green to distinquish them from normal glue points.