I don't like the name "System Call". To me a system call is a programming term for a standard system API invocation.
I think the sampler needs to be renamed to make its function clearer. "System Process" would be slightly better. Or perhaps "External Process" ? Or "OS Process" ? Or something else? Also, the GUI screen is quite awkward to use as the name column is ignored. Either use a single column, or perhaps use "Parameter" and "Description" columns?
