Easier: Adobe makes their acrobat reader document upto date with latest activeX support. However, everything is placed perfectly by Adobe so nothing is here to disturb you while reading an electronic book. Zooming in and out is always there to set on user desires. The file menu and toolbars are in the top and navigation bar will be displayed upon viewing a document in lef pan. Simple UI: The simple user interface is the main reason why users always recommend acrobat reader.