Dear Rene Suppose I have a TFile with a number of directories and subdirectories, and I want to store some objects in a subdirectory: mySubDir->cd(); object1->Write(); object2->Write(); I would like to save these objects immediately to disc, without closing the TFile. Sorrowly, it is not quite clear to me when these objects are actually written to the subdirectory on the hard disc. Does method Write() write the objects to disc immediately, or do I have to call: mySubDir->SetModified(); mySubDir->Save(); or: mySubDir->SaveSelf(kTRUE); or: file->Flush(); Which of these methods would be preferrable? Do I have to use the same methods when I want to delete objects permanently from a subdirectory on hard disc? Thank you inadvance for your help. Best regards Christian ---------------------------------- C.h.r.i.s.t.i.a.n S.t.r.a.t.o.w.a V.i.e.n.n.a, A.u.s.t.r.i.a
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