What do you mean? you use them like any other object. You include their header and, use them! the headers are mostly eather (name of object) or stl_(name of object).h like #include <list> or #include <stl_pair.h>
You should include a corresponding header file that contains required declarations of STL. For example to use container std::vector you should to write, for example, the following
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#include <vector>
int main()
{
std::vector<int> v;
// other code
return 0;
}