Are you asking for the package name? For which C++ compiler?
Typically STL is part of the libstdc++ package, no?
Each libaray in the STL will be just the name of the library (i.e. Vector is in [green]<vector>[/green]).
Ir perhaps you mean namespace, in which case all the STL objects are in [green]namespace std[/green].
I hope I answered whichever question you were looking for.