Procedure for Customs documents via Rotterdam

So just what is the procedure for Customs documents for containers entering or leaving through Rotterdam? What can, or must, be submitted electronically in advance using Portbase? At which terminals does this apply? And when is a paper Customs form still required? These four convenient diagrams lay it all out, quickly and clearly, so you always know what to do. View and/or download them now:
• Document flows Notification Import Documentation APMT MVll, APMTR, RWG
• Document flows Notification Import Documentation BCW, ECT Delta, Euromax, Uniport
• Document flows Notification Export Documentation APMT MVll, RWG
• Document flows Notification Export Documentation APMTR, ECT Delta, Euromax, RST, Uniport