IBM Professional Series User Manual page 201

dvcadrl
the device address searched for in the configuration
for userid.
[AS] dvcadr2
is the device address to be temporarily added to your
virtual machine configuration.
If
the keyword AS is omitted, dvcadr2 may not be A
or AS.
mode
is the access mode. Valid access modes are:
Mode Meaning
R Read-only (R/ 0) access. If the link is REMOTE, the
link is not done if any other user has write access.
RR
Read-only (R/O) access.
If
the link is REMOTE, the
link is established even if any other user has write
access.
W Write access.
If
the link is REMOTE, the link is not
done if the mini-disk is accessed by any other user in
either read or write mode.
WR
Write access with acceptable reduction to read access.
If
the link is REMOTE, a write access will be
established unless any other user has either read or
write access; in this case, read access will be
established.
M Write access.
If
the link is REMOTE, the link is not
done if the mini-disk is accessed by any other user in
write mode.
MR
Write access with acceptable reduction to read access.
If
the link is REMOTE, a write access will be
established unless any other user has write access; in
this case, read access will be established.
MW
Write access.
If
the link is REMOTE, write access will
be established regardless of any other user access.
7-28 VM/PC Users Guide