Whenever a document is organized so that information is in multiple columns or multiple text areas (e.g. text captions, unusual placement of icons/text), then it is important to verify that the screen reader reads the information in a logical or coherent order.

Consider the PowerPoint slide below which contains three images of and three captions. By visual scan, one would expect that the reading order would be the top-left image followed by the caption beneath, the second image, the caption beneath it then the lowest image with the caption below that.

However, within PowerPoint, the items were ordered so that the images were presented first then the captions. This occurred because the images were inserted on the slide before the captions. Fortunately, PowerPoint includes tools to allow authors to adjust the reading order of slide objects.