fixup comment in transdefs about geometry

chip-6800/transdefs.js

@@ -3,14 +3,19 @@
  *   name
  *   gate,c1,c2
  *   bb (nominal) (bounding box: xmin, xmax, ymin, ymax)
- *   geometry (absent) (unused) (length1, length2, width, #segments, area)
+ *   geometry (absent) (unused) (width1, width2, length, #segments, area)
  *   weak (boolean) (marks weak transistors, whether pullups or pass gates)
  *
- * Note: the geometry is of the MOSFET channel: the two lengths are
- * the lengths of the two edges where the poly extends past the active
- * area, which would normally be equal. The number of segments, which
- * would be 1 for a rectangular channel, or 2 for an L shape, 3 for a Z
- * or U, will allow for taking into account corner effects. 
+ * Note: the geometry is of the MOSFET channel: the two widths are
+ * the lengths of the two edges where the poly is crossing the active
+ * area. These will be equal if the channel is straight or makes an
+ * equal number of right and left turns. The number of segments should
+ * be 1 for a rectangular channel, or 2 for an L shape, 3 for a Z
+ * or U, and will allow for taking into account corner effects.
+ * 
+ * At time of writing JSSim doesn't use transistor strength information
+ * except to discard weak transistors and to treat pullups as
+ * described in segdefs.js specially.
  *
  */
 var transdefs = [