<s>
In	O
computer	B-General_Concept
science	I-General_Concept
,	O
a	O
segmented	B-Application
scan	I-Application
is	O
a	O
modification	O
of	O
the	O
prefix	B-Application
sum	I-Application
with	O
an	O
equal-sized	O
array	O
of	O
flag	O
bits	O
to	O
denote	O
segment	O
boundaries	O
on	O
which	O
the	O
scan	O
should	O
be	O
performed	O
.	O
</s>
<s>
An	O
alternative	O
method	O
used	O
by	O
High	B-Language
Performance	I-Language
Fortran	I-Language
is	O
to	O
begin	O
a	O
new	O
segment	O
at	O
every	O
transition	O
of	O
flag	O
value	O
.	O
</s>
