Hi aisha!
Usage of 2
♣ and 2
♦ as strong multi opening is typical for french standard system "major francais". Now days the system change meaning of 2
♣ and 2
♦ as follow:
2
♣: any strong 2, 1 suited or 20-21 bal, 2
♦ relay for type, unless very good suit from responder
2
♦: any GF, responses for A
If you like to read more about french 2
♣/2
♦, their continuations and all system (by the way very nice pure natural system), you can ask Rado to send you copy of it.
Misho