All, This is a document that combines the sections I abstracted from the Hspice .doc documents, plus items that I extracted directly from the Hspice manuals in PDF format. I added ?Subckts? to the title of the specification because this is a specification of sub-circuits, not of the ?main? section of a normal Spice deck that typically contains the Spice specific commands, independent voltage sources, IO buffs, ? Walter Walter Katz 303.449-2308 Mobile 720.333-1107 wkatz@xxxxxxxxxx www.sisoft.com