Well said 
[quote="tbone"]That said, I also have a button to open Explorer for the current tab/location.
It's handy to quickly test some things in the "standard" environment and for the case a non-DOpus individual comes along, not knowing what is in front of him and how to use. o) The button code is simple: %windir%\explorer.exe /e,{s!}[/quote]
I have a similar button for the same purpose but using the following code that Leo suggested:
cd C:\
Explorer /e, {sourcepath$}
I guess it works the same.