"Average price of trade"

In other words, a mechanism to close PTSC at the number they want.

FYI, here's the rest of the codes:

a = acquisition
b = bunched trade - average price
c = cash trade
d = distribution
e = automatic execution
g = bunched sold trade - opening/reopening trade detail
h = intraday trade detail
i = basket index on close transaction
j = rule 127 trade
k = rule 155 trade
l = sold last
n= next day
o = opened
p = prior reference price
r = seller
s = split trade
t = form t trade - pre/post market trade
u = extended hours trade - reported late or out of sequence
w = average price trade
y = yellow flagged regular trade
z = sold - out of sequence