In Unix, "a.out" files are stored in "coff" format. It is currently based upon a variant of the COFF format. Symbolic names are stored in the COFF symbol table. The stabs format has also been used in many COFF and ELF variations. During this time, Trafford has fallen in love with Sandra Dee, another "Fizzy Coff" colleague. All compositions by Coff, Minns, Smith, and Sweeney. Information for the handling of shared libraries is also more elaborate than for plain COFF. All real world implementations of COFF were necessarily violations of the standard as a result. Coff is also doing the centenary book in 2013. With the release of SVR4, AT&T replaced COFF with ELF.