There was a posting on this list a while ago concerning Q-charts in SPC (no replies I believe). I have not had much luck locating info on Q-charts. Does anyone know if they have another name ? Or can an online reference be suggested ? Yves Dupuis Leitch Technology --------------------------------------------------------------------------------- TechNet Mail List provided as a free service by IPC using LISTSERV 1.8d To unsubscribe, send a message to [log in to unmask] with following text in the BODY (NOT the subject field): SIGNOFF TECHNET Please visit IPC web site (http://www.ipc.org/html/forum.htm) for additional information, or contact Keach Sasamori at [log in to unmask] or 847-509-9700 ext.5315 ---------------------------------------------------------------------------------