I didn't really get the answer I wanted last time which was "you
can't" or "don't".  The HP documentation I have for RIO files says
that you can delete from a standard file.

My question is - is this true and if so, what system intrinsic could
you use to do so (programatically - rather than at the CI prompt) ?

If it's not true then why does the HP document say you can?

Thanks for any help.

Here is a bit of the document I found -

"RIO files (relative I/O)
RIO is an enhanced form of relative access.If a program opens a
standard file
for direct access,it must know the relative record number of the
record it ’s
interested in.If multiple processes are accessing the same
file,relative record
numbers can change dynamically.For example,if process “A ” deletes
relative
record number n ,then all the records after n will have their relative
record
number adjusted by one.This can make things very difficult for a
hypothetical
process “B ” that is trying to access the same file at the same
time..The relative
record numbers of the records that “B ” is interested in could be
changing even
as “B ” is accessing them..
This problem led to the development of RIO files.RIO is a random
access
method that permits individual file records to be deactivated,rather
than
deleted.These inactive records retain their relative position within
the file.RIO
files are intended for use primarily by COBOL programs because there
is a
COBOL standard for Relative I/O.RIO is available with Cobol compilers
on
MPE and on the recommended target platforms.They can be accessed using
standard COBOL statements."
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