<s>
In	O
the	O
context	O
of	O
the	O
Microsoft	B-Device
Windows	I-Device
NT	I-Device
line	O
of	O
computer	B-General_Concept
operating	I-General_Concept
systems	I-General_Concept
,	O
the	O
relative	B-General_Concept
identifier	I-General_Concept
(	O
RID	O
)	O
is	O
a	O
variable	O
length	O
number	O
that	O
is	O
assigned	O
to	O
objects	O
at	O
creation	O
and	O
becomes	O
part	O
of	O
the	O
object	O
's	O
Security	O
Identifier	O
(	O
SID	O
)	O
that	O
uniquely	O
identifies	O
an	O
account	O
or	O
group	O
within	O
a	O
domain	O
.	O
</s>
<s>
The	O
Relative	B-General_Concept
ID	I-General_Concept
Master	O
allocates	O
security	O
RIDs	O
to	O
Domain	O
Controllers	O
to	O
assign	O
to	O
new	O
Active	O
Directory	O
security	O
principals	O
(	O
users	O
,	O
groups	O
or	O
computer	O
objects	O
)	O
.	O
</s>
<s>
The	O
Relative	B-General_Concept
ID	I-General_Concept
Master	O
is	O
one	O
role	O
of	O
the	O
Flexible	B-General_Concept
single	I-General_Concept
master	I-General_Concept
operation	I-General_Concept
for	O
assigning	O
RID	O
.	O
</s>
