<s>
MetaPost	B-Language
refers	O
to	O
both	O
a	O
programming	O
language	O
and	O
the	O
interpreter	B-Application
of	O
the	O
MetaPost	B-Language
programming	O
language	O
.	O
</s>
<s>
Both	O
are	O
derived	O
from	O
Donald	O
Knuth	O
's	O
Metafont	B-Operating_System
language	O
and	O
interpreter	B-Application
.	O
</s>
<s>
MetaPost	B-Language
produces	O
vector	O
graphic	O
diagrams	O
from	O
a	O
geometric/algebraic	O
description	O
.	O
</s>
<s>
The	O
language	O
shares	O
Metafont	B-Operating_System
's	O
declarative	O
syntax	O
for	O
manipulating	O
lines	O
,	O
curves	O
,	O
points	O
and	O
geometric	O
transformations	O
.	O
</s>
<s>
Metafont	B-Operating_System
output	O
is	O
monochrome	O
,	O
whereas	O
MetaPost	B-Language
uses	O
RGB	O
or	O
CMYK	O
colors	O
.	O
</s>
<s>
The	O
MetaPost	B-Language
language	O
can	O
include	O
text	O
labels	O
on	O
the	O
diagrams	O
,	O
either	O
strings	O
from	O
a	O
specified	O
font	O
,	O
or	O
anything	O
else	O
that	O
can	O
be	O
typeset	O
with	O
TeX	B-Application
.	O
</s>
<s>
Many	O
of	O
the	O
limitations	O
of	O
MetaPost	B-Language
derive	O
from	O
features	O
of	O
Metafont	B-Operating_System
.	O
</s>
<s>
For	O
instance	O
,	O
MetaPost	B-Language
does	O
not	O
support	O
all	O
features	O
of	O
PostScript	B-Language
.	O
</s>
<s>
PostScript	B-Language
level	O
1	O
supports	O
tiled	O
patterns	O
and	O
PostScript	B-Language
3	O
supports	O
Gouraud	B-Algorithm
shading	I-Algorithm
.	O
</s>
<s>
MetaPost	B-Language
is	O
distributed	O
with	O
many	O
distributions	O
of	O
the	O
TeX	B-Application
and	O
Metafont	B-Operating_System
framework	O
,	O
for	O
example	O
,	O
it	O
is	O
included	O
in	O
the	O
MiKTeX	B-General_Concept
and	O
the	O
TeX	B-General_Concept
Live	I-General_Concept
distributions	O
.	O
</s>
<s>
The	O
encapsulated	B-Language
postscript	I-Language
produced	O
by	O
Metapost	B-Language
can	O
be	O
included	O
in	O
LaTeX	B-Application
,	O
ConTeXt	O
,	O
and	O
TeX	B-Application
documents	O
via	O
standard	O
graphics	O
inclusion	O
commands	O
.	O
</s>
<s>
The	O
encapsulated	B-Language
postscript	I-Language
output	O
can	O
also	O
be	O
used	O
with	O
the	O
PDFTeX	B-Language
engine	O
,	O
thus	O
directly	O
giving	O
PDF	B-Application
.	O
</s>
<s>
This	O
ability	O
is	O
implemented	O
in	O
ConTeXt	O
and	O
in	O
the	O
LaTeX	B-Application
graphics	O
package	O
,	O
and	O
can	O
be	O
used	O
from	O
plain	B-Application
TeX	I-Application
via	O
the	O
supp-pdf.tex	O
macro	O
file	O
.	O
</s>
<s>
ConTeXt	O
and	O
LuaTeX	B-Language
supports	O
the	O
inclusion	O
of	O
MetaPost	B-Language
code	O
within	O
the	O
input	O
file	O
.	O
</s>
<s>
Inclusion	O
of	O
MetaPost	B-Language
code	O
in	O
LaTeX	B-Application
is	O
also	O
possible	O
by	O
using	O
LaTeX-packages	O
,	O
for	O
example	O
gmp	O
or	O
mpgraphics	O
.	O
</s>
<s>
This	O
is	O
a	O
single	O
file	O
example.mp	O
which	O
when	O
processed	O
by	O
the	O
MetaPost	B-Language
interpreter	B-Application
(	O
via	O
the	O
command	O
mpost	O
on	O
Linux	B-Application
)	O
produces	O
three	O
eps	B-Language
files	I-Language
example.1	O
,	O
example.2	O
,	O
example.3	O
.	O
</s>
<s>
The	O
resulting	O
three	O
eps	B-Language
files	I-Language
can	O
be	O
used	O
in	O
TeX	B-Application
via	O
LaTeX	B-Application
's	O
\includegraphics	O
command	O
,	O
ConTeXt	O
's	O
\externalfigure,	O
Plain	B-Application
TeX	I-Application
's	O
\epsfbox	O
command	O
,	O
or	O
(	O
in	O
Plain	O
pdftex	B-Language
)	O
the	O
\convertMPtoPDF	O
command	O
from	O
supp-pdf.tex	O
.	O
</s>
<s>
To	O
view	O
or	O
print	O
the	O
third	O
diagram	O
,	O
this	O
inclusion	O
is	O
necessary	O
,	O
as	O
the	O
TeX	B-Application
fonts	O
(	O
Computer	O
Modern	O
)	O
are	O
not	O
included	O
in	O
the	O
eps	B-Language
files	I-Language
produced	O
by	O
MetaPost	B-Language
by	O
default	O
.	O
</s>
