https://manual.zorro-project.com/winloss.htm

...Long: Results of all long trades with the current asset and algorithm. Including phantom trades, but not including pool trades.
...Short: Results of all short trades with the current asset and algorithm, including phantom trades, but no pool trades.
...Total: Results of all trades with all assets and algorithms, not including phantom trades.

NumOpenLong
NumOpenShort
Number of currently open trades with the current asset and algorithm, including phantom trades.

or https://manual.zorro-project.com/fortrades.htm