[multimap.modifiers] - C++11 → C++14

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@@ -3,19 +3,12 @@
 ``` cpp
 template <class P> iterator insert(P&& x);
 template <class P> iterator insert(const_iterator position, P&& x);
 ```
-*Requires:* `P` shall be convertible to `value_type`.
-If `P` is instantiated as a reference type, then the argument `x` is
-copied from. Otherwise `x` is considered to be an rvalue as it is
-converted to `value_type` and inserted into the `map`. Specifically, in
-such cases `CopyConstructible` is not required of `key_type` or
-`mapped_type` unless the conversion from `P` specifically requires it
-(e.g., if `P` is a `tuple<const key_type, mapped_type>`, then `key_type`
-must be `CopyConstructible`). The signature taking `InputIterator`
-parameters does not require `CopyConstructible` of either `key_type` or
-`mapped_type` if the dereferenced `InputIterator` returns a non-const
-rvalue `pair<key_type, mapped_type>`. Otherwise `CopyConstructible` is
-required for both `key_type` and `mapped_type`.

 ``` cpp
 template <class P> iterator insert(P&& x);
 template <class P> iterator insert(const_iterator position, P&& x);
 ```
+*Effects:* The first form is equivalent to
+`return emplace(std::forward<P>(x))`. The second form is equivalent to
+`return emplace_hint(position, std::forward<P>(x))`.
+*Remarks:* These signatures shall not participate in overload resolution
+unless `std::is_constructible<value_type, P&&>::value` is `true`.

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