<s>
A	O
download	B-Protocol
manager	I-Protocol
is	O
a	O
type	O
of	O
software	O
that	O
manages	O
the	O
downloading	B-Application
of	O
files	B-Operating_System
from	O
the	O
Internet	O
,	O
which	O
may	O
be	O
built	O
into	O
a	O
web	B-Application
browser	I-Application
,	O
or	O
as	O
a	O
standalone	O
program	B-Application
.	O
</s>
