[October 17, 2000] ". . . a design effort to produce an XML file format (working title XDELTA), derived from the DELTA (DEscription Language for TAxonomy) standard. The XDELTA format is a XML version of the DELTA format. It consists of a draft DTD which captures the essential information from the DELTA format, and (eventually) some sample utilities for converting that format to and from the original DELTA format (for backwards compatibility) as well as hopefully demonstrating some of the power of XML in storing structured data for information exchange between research scientists. . . An example XML data file containing data for the Lepidoptera is also available; this is derived from the example DELTA Lepidoptera data.