tradeStats - Avg.Daily.PL/Med.Daily.PL question

For the record, dailyStats is not something that's exclusive to my packages.
It's a blotter function. Also, I highly recommend upgrading to the latest
R-forge TTR and blotter. A lot of the times that people can't get my code to
run usually involves the CRAN version of TTR. For the record, the way I use
dailyStats is like this:

dStats <- dailyStats(Portfolios = portfolio.st, use="Equity")