Add two envelops together and return the sum

C# | Visual Basic | Visual C++ |
public static Envelope3M<T> operator +( Envelope3M<T> e1, Envelope3M<T> e2 )
Public Shared Operator + ( _ e1 As Envelope3M(Of T), _ e2 As Envelope3M(Of T) _ ) As Envelope3M(Of T)
public: static Envelope3M<T>^ operator +( Envelope3M<T>^ e1, Envelope3M<T>^ e2 )

- e1 (Envelope3M<(Of <(T>)>))
- The first envelop
- e2 (Envelope3M<(Of <(T>)>))
- The second envelop

The sum of the two envelop