Sergey, i think your answer isn't correct.
In jsp we have the "config" implicit object that implements javax.servlet.ServletConfig and so permits to retrieve
servlet configuration parameters and not context parameters.
In EL we have initParam implicit object that, as JSP specification says, is a Map that maps context initialization parameter names to their
string parameter values (obtained by calling ServletContext.getInitParameter(String name)). So it retrieves context and not servlet parameters.
Let me know your opinion.