<s>
BEFLIX	B-Language
is	O
the	O
name	O
of	O
the	O
first	O
embedded	O
domain-specific	O
language	O
for	O
computer	O
animation	O
,	O
invented	O
by	O
Ken	O
Knowlton	O
at	O
Bell	O
Labs	O
in	O
1963	O
.	O
</s>
<s>
Ken	O
Knowlton	O
used	O
BEFLIX	B-Language
to	O
create	O
animated	O
films	O
for	O
educational	O
and	O
engineering	O
purposes	O
.	O
</s>
<s>
BEFLIX	B-Language
was	O
developed	O
on	O
the	O
IBM	B-Device
7090	I-Device
mainframe	O
computer	O
using	O
a	O
Stromberg-Carlson	O
SC4020	O
microfilm	O
recorder	O
for	O
output	O
.	O
</s>
<s>
The	O
programming	O
environment	O
targeted	O
by	O
BEFLIX	B-Language
consisted	O
of	O
a	O
FORTRAN	O
II	O
implementation	O
with	O
FORTRAN	O
II	O
Assembly	O
Program	O
(	O
FAP	O
)	O
macros	O
.	O
</s>
<s>
The	O
first	O
version	O
of	O
BEFLIX	B-Language
was	O
implemented	O
through	O
the	O
FAP	O
macro	O
facility	O
.	O
</s>
<s>
The	O
SC4020	O
used	O
a	O
charactron	B-General_Concept
tube	I-General_Concept
to	O
expose	O
microfilm	O
.	O
</s>
<s>
In	O
BEFLIX	B-Language
,	O
the	O
electron	O
beam	O
is	O
defocused	O
to	O
draw	O
pixels	O
as	O
blurred	O
character	O
shapes	O
.	O
</s>
<s>
BEFLIX	B-Language
writes	O
the	O
magnetic	O
tape	O
output	O
on	O
the	O
7090	O
and	O
the	O
film	O
recorder	O
reads	O
the	O
tape	O
to	O
create	O
the	O
film	O
output	O
.	O
</s>
<s>
BEFLIX	B-Language
also	O
supports	O
a	O
preview	O
mode	O
where	O
selected	O
frames	O
of	O
the	O
output	O
are	O
written	O
to	O
the	O
line	O
printer	O
.	O
</s>
<s>
BEFLIX	B-Language
supports	O
two	O
resolutions	O
for	O
output	O
frames	O
:	O
fine	O
(	O
252x184	O
)	O
and	O
coarse	O
(	O
126x92	O
)	O
.	O
</s>
<s>
The	O
surface	O
organization	O
in	O
BEFLIX	B-Language
allows	O
for	O
different	O
geometric	O
combinations	O
of	O
smaller	O
surfaces	O
within	O
available	O
memory	O
.	O
</s>
<s>
BEFLIX	B-Language
pixels	O
store	O
values	O
0-7	O
,	O
allowing	O
them	O
to	O
be	O
packed	O
12	O
to	O
a	O
36-bit	O
word	O
of	O
the	O
7090	O
.	O
</s>
<s>
BEFLIX	B-Language
provides	O
low-level	O
operations	O
and	O
high-level	O
operations	O
.	O
</s>
<s>
For	O
low-level	O
operations	O
,	O
BEFLIX	B-Language
provides	O
26	O
scanners	O
named	O
A	O
through	O
Z	O
.	O
</s>
<s>
High-level	O
operations	O
in	O
BEFLIX	B-Language
fall	O
roughly	O
into	O
four	O
categories	O
:	O
</s>
