<s>
In	B-Protocol
computer	B-General_Concept
programming	I-General_Concept
,	O
pidgin	B-Language
code	I-Language
is	O
a	O
mixture	O
of	O
several	O
programming	O
languages	O
in	B-Protocol
the	O
same	O
program	O
,	O
or	O
pseudocode	B-Language
that	O
is	O
a	O
mixture	O
of	O
a	O
programming	O
language	O
with	O
natural	O
language	O
descriptions	O
.	O
</s>
<s>
Hence	O
the	O
name	O
:	O
the	O
mixture	O
is	O
a	O
programming	O
language	O
analogous	O
to	O
a	O
pidgin	B-Protocol
in	B-Protocol
natural	O
languages	O
.	O
</s>
<s>
In	B-Protocol
numerical	B-General_Concept
computation	I-General_Concept
,	O
mathematical	O
style	O
pseudocode	B-Language
is	O
sometimes	O
called	O
pidgin	B-Language
code	I-Language
,	O
for	O
example	O
pidgin	B-Language
ALGOL	I-Language
(	O
the	O
origin	O
of	O
the	O
concept	O
)	O
,	O
pidgin	B-Protocol
Fortran	B-Application
,	O
pidgin	B-Protocol
BASIC	O
,	O
pidgin	B-Protocol
Pascal	O
,	O
and	O
pidgin	B-Protocol
C	O
.	O
It	O
is	O
a	O
compact	O
and	O
often	O
informal	O
notation	O
that	O
blends	O
syntax	B-Application
taken	O
from	O
a	O
conventional	O
programming	O
language	O
with	O
mathematical	O
notation	O
,	O
typically	O
using	O
set	O
theory	O
and	O
matrix	B-Architecture
operations	O
,	O
and	O
perhaps	O
also	O
natural	O
language	O
descriptions	O
.	O
</s>
<s>
Normally	O
non-ASCII	O
typesetting	O
is	O
used	O
for	O
the	O
mathematical	O
equations	O
,	O
for	O
example	O
by	O
means	O
of	O
TeX	B-Application
or	O
MathML	B-Language
markup	O
,	O
or	O
proprietary	O
Formula	B-Application
editor	I-Application
formats	O
.	O
</s>
<s>
These	O
are	O
examples	O
of	O
articles	O
that	O
contain	O
mathematical	O
style	O
pseudo	B-Language
code	I-Language
:	O
</s>
