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157RECONFICURINGWRITINGautomatically generated contents screen, which authors and designers canarrange to appear a particular place on the screen. ln Hypefiert in Hyperturt,the electronic version of this book's first version, this contents section appearedto the left of the main text.This electronic table ofcontents differs in several ways from the static versionsone encounters in the printed book and on the Web. First, clicking on anicon near the title of a chapter immediately causes the section headings nextlevel down to appear, and clicking on them in turn displays subheadings, andso on. Essentially, this dynamic table of contents acts very much like Nelsonianstretchtext. Since I had added additional subdivisions to almost every sectionbetter to suit reading in an electronic environment, this feature permittedHyperturtin Hypefiertb display both the book's originaTorganizatlon and theadded elements as readers needed them. The second point at which Dyna-Text's dynamic contents screen differs from static ones is that clicking on anysection immediately brings up the relevant section in the text window immediatelyto the right of the section title (Figure 141. Finally, because the designersof this system combined this feature with its full-text search engine, theresults ofa search appear in the contents screen as well as in the text itself.Searching for "Deridai one learns thatthis name appears seventy-fourtimesin the entire book, forty-three times in the first chapter, and five times in thefirst section of that chapter. This dynamic listing proves particularly valuablewhen a DynaText web is configured as an electronic book, for then followinga link from one point in the text to another causes the destination text to replacethe departure one. The system works so quickly-nearly instantaneouslythatwithout the contents listing at the side, readers become disoriented.Tables of contents, whether static or dynamic, certainly have their uses,particularly when hypertextualizing material originally conceived for printpresentation. Linked static tables are already common in HTML, but one canalso create some of the effects of the DynaText form by using HTML frames,placing the contents at the left and text at the right.Suppose You Could Have Everything?-The Intermedia Web View and SomePartial Analogues. The most important Intermedia feature that current systems,particularly web browsers, lack is its system-generatedynamic trackingmap, whose basic idea evolved through three stages. The first, the GlobalTracking Map, provided graphic information about all links and documentsin a particular body of linked documents. Clicking twice on the icon for a particularhypertext corpus, such as Contert32, Nucleor Arrns, or Biology, simultaneouslyactivated that hypertext web-that is, opened it-and generated a