XTND Programmer's Guide Author:Apple Computer XTND is an architecture that allow Macintosh(tm) applications to read and to write files in a potentially unlimited number for file formats. The XTND architecture include the following components: (1) XTND-capable applications, which are linked with a small library of "glue" routines. (2) The XTND System, a file dynamically loaded by the glue... more » routines. (3) A standard text document model which specifies the "grammar" of text documents. (4) An open-ended set of XTND translator files stored on the Standard XTND search path.« less