This is to confirm our policy regarding U.S. physical gas contracts for 
online trading.  There is no rule or guideline that Primary Contacts and 
Backups for EOL should always select a Master Contract over a GISB.

Examples of instances where online trading is using a GISB over a Master 
Contract:

 96028966 GISB  
 96028965 Master
 
 96013126 GISB
 96007493 Master

Thanks,
Karen
x3-0605