·only allowed
at the start of namespace
wrespect
scope, not recursive, no clash if no use
wnever
affect other using directives
using System;
class Bar { ... }
namespace
Accu.Conference
{
using System.Collections;
...
class Foo : Bar
{
static void Main(String[]
args)
{
Console.Write(args[0]);
}
...
private Hashtable
store;
}
}