I suppose most have read the Acta D editorial already http://journals.iucr.org/d/issues/2010/01/00/me0408/me0408.pdf but it seems another creative way of structure generation has been discovered by some small molecule people: http://journals.iucr.org/e/issues/2010/01/00/me0406/me0406.pdf Best, BR ----------------------------------------------------------------- Bernhard Rupp 001 (925) 209-7429 +43 (676) 571-0536 [log in to unmask] [log in to unmask] http://www.ruppweb.org/ ----------------------------------------------------------------- The hard part about playing chicken is to know when to flinch -----------------------------------------------------------------