IMPORT DYNPRO h f e m ID id.
The dynpro with the name in the id field is imported. The dynpro information is loaded into the structure h (dynpro header, structure D020S) and into the internal tables f (field list, structure D021S), e (flow logic, structure D022S) and m (matchcode information, structure D023S).
这是abapdocu里面的解释
