Acorn computer econet level 2/3 User Manual page 17

without R you cannot:
LOAD the file
*LOAD it
*<filename> it
*EXEC it
(*LOAD, *<filename>, *EXEC and *SPOOL are explained in
the section on Machine-code and data files; OPENOUT is
explained in the section on Reading and writing to files.)
If you try to read a file which doesn't have R in its access string, an
"Insufficient access" message will come up on the screen. If you
try to delete a file which has an L in its access string, you will get
an "Entry locked" message.
EXAMPLES
*ACCESS MATHS LWR/R
means you will be able to write to and read your file MATHS,
but not to delete it; and other users will be able to read it, but not
write to it. You will get a "Bad attribute" error message if you
specify L in the right hand half of the access string: files are
automatically locked to other users.
*ACCESS MATHS R/
means you will be able to read and delete MATHS but not write to
it. Other users will have no access to it at all.
You can use *ACCESS to unlock and re-lock your directories,
but W and R have no meaning in access strings for directories.
Until you specify access strings for your files, the file server will
automatically give them the access string WR/, which means you
will be able to delete, write to and read them, and that others will
have no access to them at all.
with L you cannot:
SAVE over the file
*DELETE it
*RENAME it
create a *SPOOL file over it
OPENOUT it
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