<s>
In	O
computing	O
,	O
Fudgets	B-Library
is	O
a	O
graphical	B-Application
user	I-Application
interface	I-Application
toolkit	B-Library
for	O
the	O
functional	B-Language
programming	I-Language
language	I-Language
Haskell	B-Language
and	O
the	O
X	B-Operating_System
Window	I-Operating_System
System	I-Operating_System
.	O
</s>
<s>
Fudgets	B-Library
makes	O
it	O
easy	O
to	O
create	O
client	B-Operating_System
–	I-Operating_System
server	I-Operating_System
applications	O
that	O
communicate	O
via	O
the	O
Internet	O
.	O
</s>
<s>
Most	O
of	O
the	O
work	O
on	O
Fudgets	B-Library
was	O
done	O
in	O
1991-1996	O
by	O
Thomas	O
Hallgren	O
and	O
Magnus	O
Carlsson	O
.	O
</s>
<s>
The	O
authors	O
claim	O
that	O
many	O
of	O
the	O
advantages	O
of	O
Fudgets	B-Library
come	O
from	O
the	O
fact	O
that	O
they	O
are	O
programmed	O
in	O
a	O
lazy	B-Application
functional	B-Language
programming	I-Language
language	I-Language
.	O
</s>
<s>
The	O
main	O
entity	O
of	O
toolkit	B-Library
is	O
fudget	B-Library
(	O
implemented	O
on	O
low	O
level	O
through	O
stream	O
processors	O
)	O
which	O
has	O
its	O
own	O
input	O
and	O
output	O
.	O
</s>
<s>
Fudgets	B-Library
can	O
be	O
composed	O
in	O
parallel	O
or	O
sequence	O
yielding	O
new	O
fudget	B-Library
which	O
can	O
be	O
used	O
in	O
code	O
as	O
any	O
other	O
fudget	B-Library
.	O
</s>
<s>
The	O
code	O
is	O
self-describing	O
considering	O
that	O
>=	O
=	O
<	O
is	O
sequential	O
fudget	B-Library
plumbing	O
and	O
mapF	O
is	O
fudget	B-Library
that	O
takes	O
a	O
function	O
of	O
one	O
argument	O
and	O
makes	O
a	O
fudget	B-Library
which	O
output	O
is	O
input	O
applied	O
to	O
that	O
function	O
.	O
</s>
<s>
Note	O
that	O
fudget	B-Library
composition	O
must	O
be	O
read	O
from	O
right	O
to	O
left	O
,	O
as	O
a	O
simple	O
function	O
composition	O
.	O
</s>
<s>
The	O
license	O
of	O
Fudgets	B-Library
claims	O
that	O
this	O
software	O
is	O
free	B-License
for	O
non-commercial	O
use	O
only	O
.	O
</s>
