The last step, after building an HBK file (see above), is to create a search index for the Electronic Book. This requires compilation of an index file (TXT) of phrases, regions, and filenames, as detailed in the MathSoft documentation on their website. The region numbers for the search index are exposed by clicking a region and pressing all-at-once on the keyboard. You must do this in Mathcad – not the book browser. The number appears on the prompt bar. Region numbering after a reference statement (to another file) is incremented by the number of regions in the referenced file. In Mathcad 8 (and probably other versions) the search index routine in the book browser does not count the included reference regions when locating a region on a page. Therefore the author-compiled index file must contain the region counts as if the reference statements do not exist. The simplest way is to delete the reference statements on a file before doing region counts. Of course you must N
