5. The method of claim 1 further comprising: determining the scroll rate of the portion of the document; and generating the document that specifies the directive, based on the determined scroll rate of the portion of the document.
7. The method of claim 5 , wherein: the determining of the scroll rate is based on at least one of a sentence structure used in the portion of the document, a reading level of the portion of the document, or a subject of the portion of the document.