<s>
In	O
computer	B-General_Concept
programming	I-General_Concept
a	O
control	B-General_Concept
break	I-General_Concept
is	O
a	O
change	O
in	O
the	O
value	O
of	O
one	O
of	O
the	O
keys	O
on	O
which	O
a	O
file	O
is	O
sorted	O
which	O
requires	O
some	O
extra	O
processing	O
.	O
</s>
<s>
Quite	O
often	O
there	O
is	O
a	O
hierarchy	O
of	O
nested	O
control	B-General_Concept
breaks	I-General_Concept
in	O
a	O
program	O
,	O
e.g.	O
</s>
<s>
Structured	B-Language
programming	I-Language
techniques	O
have	O
been	O
developed	O
to	O
ensure	O
correct	O
processing	O
of	O
control	B-General_Concept
breaks	I-General_Concept
in	O
languages	O
such	O
as	O
COBOL	B-Application
and	O
to	O
ensure	O
that	O
conditions	O
such	O
as	O
empty	O
input	O
files	O
and	O
sequence	O
errors	O
are	O
handled	O
properly	O
.	O
</s>
<s>
With	O
fourth	B-Language
generation	I-Language
languages	I-Language
such	O
as	O
SQL	B-Language
,	O
the	O
programming	O
language	O
should	O
handle	O
most	O
of	O
the	O
details	O
of	O
control	B-General_Concept
breaks	I-General_Concept
automatically	O
.	O
</s>
