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FILEREXX.DLL is a REXX Function Library that contains additional functions for file reading/writing routines which make it possible to access the same files from multiple running scripts (i.e., allow file sharing). FileRexx also makes it much easier to read/write files containing binary values. There are also routines which vastly simplify device (i.e., driver) I/O, and make some driver control possible which standard REXX doesn't allow. Finally, FileRexx offers a lot more parsing options when reading a line, thus eliminating the need to parse a line into separate pieces, or using TRANSLATE to change the case.