<s>
A	O
mathematical	B-Language
markup	I-Language
language	I-Language
is	O
a	O
computer	O
notation	O
for	O
representing	O
mathematical	O
formulae	O
,	O
based	O
on	O
mathematical	O
notation	O
.	O
</s>
<s>
For	O
computer-interpretable	O
syntaxes	O
,	O
the	O
most	O
popular	O
are	O
TeX/LaTeX	O
and	O
MathML	B-Language
(	O
Mathematical	B-Language
Markup	I-Language
Language	I-Language
)	O
.	O
</s>
<s>
Popular	O
languages	O
for	O
input	O
by	O
humans	O
and	O
interpretation	O
by	O
computers	O
include	O
TeX/LaTeX	O
and	O
eqn	B-Application
.	O
</s>
<s>
Computer	B-General_Concept
algebra	I-General_Concept
systems	I-General_Concept
such	O
as	O
Macsyma	B-Language
,	O
Mathematica	B-Language
(	O
Wolfram	B-Language
Language	I-Language
)	O
,	O
Maple	B-Language
,	O
and	O
MATLAB	B-Language
each	O
have	O
their	O
own	O
syntax	O
.	O
</s>
<s>
When	O
the	O
purpose	O
is	O
informal	O
communication	O
with	O
other	O
humans	O
,	O
syntax	O
is	O
often	O
ad	O
hoc	O
,	O
sometimes	O
called	O
"	O
ASCII	B-Language
math	I-Language
notation	I-Language
"	O
.	O
</s>
<s>
Academics	O
sometimes	O
use	O
syntax	O
based	O
on	O
TeX	B-Application
due	O
to	O
familiarity	O
with	O
it	O
from	O
writing	O
papers	O
.	O
</s>
<s>
Web	O
pages	O
may	O
also	O
use	O
a	O
limited	O
amount	O
of	O
HTML	B-Language
to	O
mark	O
up	O
a	O
small	O
subset	O
,	O
for	O
example	O
superscripting	O
.	O
</s>
<s>
Ad	O
hoc	O
syntax	O
requires	O
context	O
to	O
interpret	O
ambiguous	O
syntax	O
,	O
for	O
example	O
"	O
<=	O
"	O
could	O
be	O
"	O
is	O
implied	O
by	O
"	O
or	O
"	O
less	O
than	O
or	O
equal	O
to	O
"	O
,	O
and	O
"	O
dy/dx	O
"	O
is	O
likely	O
to	O
denote	O
a	O
derivative	B-Algorithm
,	O
but	O
strictly	O
speaking	O
could	O
also	O
mean	O
a	O
finite	O
quantity	O
dy	O
divided	O
by	O
dx	O
.	O
</s>
<s>
Markup	O
languages	O
optimized	O
for	O
computer-to-computer	O
communication	O
include	O
MathML	B-Language
,	O
OpenMath	B-Language
,	O
and	O
OMDoc	B-Language
.	O
</s>
<s>
Microsoft	O
Word	O
included	O
Equation	B-Application
Editor	I-Application
,	O
a	O
limited	O
version	O
of	O
MathType	B-Application
,	O
until	O
2007	O
.	O
</s>
<s>
These	O
allow	O
entering	O
formulae	O
using	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
,	O
and	O
converting	O
to	O
standard	O
markup	O
languages	O
such	O
as	O
MathML	B-Language
.	O
</s>
<s>
With	O
Microsoft	O
's	O
release	O
of	O
Microsoft	B-Application
Office	I-Application
2007	I-Application
and	O
the	O
Office	B-Operating_System
Open	I-Operating_System
XML	I-Operating_System
file	I-Operating_System
formats	I-Operating_System
,	O
they	O
introduced	O
a	O
new	O
equation	B-Application
editor	I-Application
which	O
uses	O
a	O
new	O
format	O
,	O
"	O
Office	O
Math	O
Markup	O
Language	O
"	O
(	O
OMML	O
)	O
.	O
</s>
<s>
The	O
lack	O
of	O
compatibility	O
led	O
some	O
prestigious	O
scientific	O
journals	O
to	O
refuse	O
to	O
accept	O
manuscripts	O
which	O
had	O
been	O
produced	O
using	O
Microsoft	B-Application
Office	I-Application
2007	I-Application
.	O
</s>
<s>
SciWriter	O
is	O
another	O
GUI	B-Application
that	O
can	O
generate	O
MathML	B-Language
and	O
LaTeX	B-Application
.	O
</s>
<s>
ASCIIMathML	B-Language
,	O
a	O
JavaScript	B-Language
program	O
,	O
can	O
convert	O
ad	O
hoc	O
ASCII	O
notation	O
to	O
MathML	B-Language
.	O
</s>
