[tdwg-tag] character encodings

Does SDD (resp. tdwg) have any best-practice about character encodings and character sets in XML. The sad fact of life is that many printed, and word processing, systematics and ecology documents have odd symbols even in characters and states, e.g. the degree sign, +- sign, the circled 'x', em-dashes, ..., which are not always rendered by browsers. -- Robert A. Morris Professor of Computer Science (nominally retired) UMASS-Boston 100 Morrissey Blvd Boston, MA 02125-3390 Associate, Harvard University Herbaria email: ram@cs.umb.edu web: http://bdei.cs.umb.edu/ web: http://etaxonomy.org/FilteredPush http://www.cs.umb.edu/~ram phone (+1)617 287 6466