<s>
The	O
Multidimensional	B-Application
hierarchical	I-Application
toolkit	I-Application
or	O
is	O
a	O
Linux-based	O
,	O
open-sourced	O
,	O
toolkit	O
of	O
portable	O
software	O
that	O
supports	O
very	O
fast	O
,	O
flexible	O
,	O
multi-dimensional	O
and	O
hierarchical	O
storage	O
,	O
retrieval	O
and	O
manipulation	O
of	O
information	O
in	O
databases	B-Application
ranging	O
in	O
size	O
up	O
to	O
256	O
terabytes	O
.	O
</s>
<s>
The	O
package	O
is	O
written	O
in	O
C	B-Language
and	O
C++	B-Language
and	O
is	O
available	O
under	O
the	O
GNU	O
GPL/LGPL/Free	O
Documentation	O
licenses	O
in	O
source	O
code	O
form	O
.	O
</s>
<s>
The	O
distribution	O
kit	O
contains	O
demonstration	O
implementations	O
of	O
network-capable	O
,	O
interactive	O
text	O
and	O
sequence	O
retrieval	O
tools	O
that	O
function	O
with	O
very	O
large	O
genomic	O
data	B-Application
bases	I-Application
and	O
illustrate	O
the	O
toolkit	O
's	O
capability	O
to	O
manipulate	O
massive	O
data	O
sets	O
of	O
genomic	O
information	O
.	O
</s>
<s>
Versions	O
exist	O
for	O
Linux	B-Application
,	O
Cygwin	B-Language
,	O
and	O
Windows	B-Application
XP	I-Application
.	O
</s>
<s>
It	O
is	O
based	O
on	O
MUMPS	B-Language
(	O
also	O
referred	O
to	O
as	O
M	B-Language
)	O
,	O
a	O
general	O
purpose	O
programming	O
language	O
that	O
originated	O
in	O
the	O
mid	O
60	O
's	O
at	O
the	O
Massachusetts	O
General	O
Hospital	O
.	O
</s>
<s>
A	O
global	O
array	O
may	O
appear	O
anywhere	O
an	O
ordinary	O
array	O
reference	O
is	O
permitted	O
and	O
data	O
may	O
be	O
stored	O
at	O
leaf	O
nodes	O
as	O
well	O
as	O
intermediate	O
nodes	O
in	O
the	O
data	B-Application
base	I-Application
array	O
.	O
</s>
<s>
The	O
toolkit	O
includes	O
several	O
functions	O
to	O
traverse	O
the	O
data	B-Application
base	I-Application
and	O
manipulate	O
the	O
arrays	O
.	O
</s>
<s>
The	O
toolkit	O
makes	O
the	O
data	B-Application
base	I-Application
and	O
function	O
set	O
available	O
as	O
C++	B-Language
classes	O
and	O
also	O
permits	O
interpretive	O
execution	O
of	O
legacy	O
Mumps	B-Language
scripts	O
.	O
</s>
<s>
To	O
use	O
the	O
toolkit	O
,	O
you	O
install	O
the	O
MDH	O
and	O
Mumps	B-Language
distribution	O
kit	O
and	O
related	O
code	O
.	O
</s>
<s>
The	O
toolkit	O
implements	O
the	O
legacy	O
Mumps	B-Language
functions	O
:	O
$	O
ascii( )	O
,	O
$	O
extract( )	O
,	O
$	O
find( )	O
,	O
,	O
$	O
length( )	O
,	O
$	O
name( )	O
,	O
$	O
justify( )	O
,	O
$	O
order( )	O
,	O
$	O
piece( )	O
,	O
and	O
$test	O
as	O
well	O
as	O
vector	O
and	O
matrix	O
operations	O
,	O
Boyer	B-Algorithm
–	I-Algorithm
Moore	I-Algorithm
–	I-Algorithm
Gosper	I-Algorithm
string	I-Algorithm
search	I-Algorithm
algorithm	I-Algorithm
functions	O
,	O
a	O
Smith	B-Algorithm
–	I-Algorithm
Waterman	I-Algorithm
algorithm	I-Algorithm
function	O
,	O
relational	O
algebra	O
operations	O
and	O
access	O
to	O
the	O
Perl	B-Language
Compatible	I-Language
Regular	I-Language
Expression	I-Language
library	O
(	O
PCRE	B-Language
)	O
.	O
</s>
