The following convention is used to designate production
	hybrids at LBNL.


	Example:	2P3

	Means 2-chip hybrid, Phi side, serial number 3.

	Example:        4Z47

	Means 4-chip hybrid, Z side, serial number 47. 
	      (note that 4-chip hybrids only occur on the 
	       z-side- layer 3)

	On the actual hybrids we only write the serial number.
	For example on 2P3 would be just the number 3. The fact 
	that it's a 2-chip hybrid meant for the phi side is obvious
	from looking at it.


	Finally, because hybrids are made on multi-part plates, there
	will be for example hybrids 2P3, 2Z3, 4Z3, and 6P3 all with the 
	same serial number. These all come from the same BeO plate.