here fone I presume you mean comsec G attribute? Its from the following but not sure that everyone can get to it
http://www.comsec.com.au/ERIC/PT2Help/Professional_Trader_Help.htm
This is the list
C Buy cancel request
D Sell cancel request
F Buy partial fill
G Sell partial fill
I Fixed Interest Trade
M Special Market
N Not included in cumulative totals
O Off-Market trade
S Short sell (only sent to selling broker)
X Cancelled
Z Stop cancel request