> > We want write a REXX EXEC , that do a Update in place. > > Another words, I need, read the record 1 from the file, and then > rewrite > the > > same record. > > Is possible?
In addition to reading the manuals that Alan suggested, you should look for the RXFILEIO package on the VMWorkshop tapes. It provides CMS filesystem I/O interfaces that are much more natural REXX function interfaces to the CMS file I/O macros. You probably could also use the CMS common I/O routines, but they're a lot harder to understand and use.
