10. A method comprising: accessing a document that references a file in which scroll rates that correspond to the document are stored, the scroll rates stored in the file each corresponding to a different portion among multiple portions of the document, a scroll rate among the scroll rates indicating a speed at which its corresponding portion of the document is to be automatically scrolled, the file further storing a directive that corresponds to the corresponding portion of the document and indicates an action, other than setting a delay time for scrolling, to be performed; accessing the file referenced by the document; and using a processor, automatically scrolling the document at different speeds based on the scroll rates that are specified by the file referenced by the document, the automatic scrolling of the document comprising: automatically scrolling the portion of the document at its corresponding scroll rate specified by the referenced file; and performing the action indicated by the directive that corresponds to the portion of the document.
15. The method of claim 10 , wherein: the portion of the document is adjacent to a further portion of the document; and the determining of the scroll rate is based on a further scroll rate that corresponds to the adjacent further portion of the document.