ISIS Tutor was evaluated in three versions: one without adaptivity, one with adaptive link annotation, and one with adaptive link hiding and annotation. The difference between the non-adaptive and the adaptive versions is very clear. The version with link hiding required fewer navigation steps, but that difference is not really significant, especially because in the version with just annotation not all the menu items fit on the screen, so additional steps were needed to jump from screen 1 to screen 2 of the menu.