<s>
Galaksija	B-Language
BASIC	I-Language
was	O
the	O
BASIC	O
interpreter	B-Application
of	O
the	O
Galaksija	B-Device
build-it-yourself	O
home	O
computer	O
from	O
Yugoslavia	O
.	O
</s>
<s>
While	O
being	O
partially	O
based	O
on	O
code	O
taken	O
from	O
TRS-80	B-Device
Level	O
1	O
BASIC	O
,	O
which	O
the	O
creator	O
believed	O
to	O
have	O
been	O
a	O
Microsoft	B-Language
BASIC	I-Language
,	O
the	O
extensive	O
modifications	O
of	O
Galaksija	B-Device
BASICsuch	O
as	O
to	O
include	O
rudimentary	O
array	O
support	O
,	O
video	O
generation	O
code	O
(	O
as	O
the	O
CPU	B-Device
itself	O
did	O
it	O
in	O
absence	O
of	O
dedicated	O
video	O
circuitry	O
)	O
and	O
generally	O
improvements	O
to	O
the	O
programming	O
languageis	O
said	O
to	O
have	O
left	O
not	O
much	O
more	O
than	O
flow-control	O
and	O
floating	B-Algorithm
point	I-Algorithm
code	O
remaining	O
from	O
the	O
original	O
.	O
</s>
<s>
The	O
core	O
implementation	O
of	O
the	O
interpreter	B-Application
was	O
fully	O
contained	O
in	O
the	O
4KiB	O
ROM	B-Device
"	I-Device
A	I-Device
"	I-Device
or	I-Device
"	I-Device
1	I-Device
"	I-Device
.	O
</s>
<s>
The	O
computer	O
's	O
original	O
mainboard	B-Device
had	O
a	O
reserved	O
slot	O
for	O
an	O
extension	O
ROM	B-Device
"	I-Device
B	I-Device
"	I-Device
or	I-Device
"	I-Device
2	I-Device
"	I-Device
that	O
added	O
more	O
commands	O
and	O
features	O
such	O
as	O
a	O
built-in	O
Zilog	B-General_Concept
Z80	I-General_Concept
assembler	O
.	O
</s>
<s>
The	O
core	O
implementation	O
,	O
in	O
ROM	B-Device
"	I-Device
A	I-Device
"	I-Device
or	I-Device
"	I-Device
1	I-Device
"	I-Device
,	O
contained	O
3	O
special	O
symbols	O
and	O
32	O
keywords	O
:	O
</s>
<s>
serves	O
as	O
PEEK	B-Language
when	O
used	O
as	O
a	O
function	O
(	O
e.g.	O
</s>
<s>
PRINT	O
BYTE(11123 )	O
)	O
and	O
POKE	B-Language
when	O
used	O
as	O
a	O
command	O
(	O
e.g.	O
</s>
<s>
Optional	O
numeric	B-Algorithm
argument	O
specifies	O
the	O
first	O
line	O
number	O
to	O
begin	O
listing	O
with	O
.	O
</s>
<s>
Printing	O
numeric	B-Algorithm
or	O
string	O
expression	O
.	O
</s>
<s>
Optional	O
numeric	B-Algorithm
argument	O
specifies	O
the	O
line	O
number	O
to	O
begin	O
execution	O
with	O
.	O
</s>
<s>
The	O
extended	O
BASIC	O
features	O
,	O
in	O
ROM	B-Device
"	I-Device
B	I-Device
"	I-Device
or	I-Device
"	I-Device
2	I-Device
"	I-Device
,	O
contained	O
one	O
extra	O
reserved	O
symbol	O
and	O
22	O
extra	O
keywords	O
:	O
</s>
