MODATT is a utility for modifying file attributes.
     
    MODATT DOES NOT convert a file. MODATT changes characteristics of
the file, and thus VMS' view of the file. MODATT can be used simply to view
the current characteristics of a file, or it can be used to change ANY of
the changeable characteristics. This utility can be VERY dangerous, and
should only be used if you have a good understanding of RMS. Care should
be taken when using this utility. While it doesn't actually change the file
itself, you might consider using a backup copy of the file.
     
To use:
        Either edit MODATT.CLD so that the IMAGE clause points to where
you are storing the image, or define a logical name EXE$DIR to point to
where you are storing the image. Then do SET COMMAND MODATT. You will then
be able to use the MODATT command.
     
Files in this directory:
        C.OPT - used for linking
     
        ATRDEF.H
        CLD.H
        FATDEF.H
        FCHDEF.H - Header files for MODATT program
        FIBDEF.H
        FJNDEF.H
        IODEF.H
     
        MODATT.C - source to MODATT program
        MODATT.CLD - command definition for MODATT
        MODATT.EXE - executable of MODATT program
        MODATT.OBJ - Object code for MODATT (compiled /DEBUG)
        MODATT.RNH - runoff version of help file, make local modifications
                to this file, the use RUNOFF MODATT.RNH, or, if you have
                MAKE, you should be able to say MAKE HELP
        MAKEFILE. - Makefile for those of you with MAKE (a must have item)