<s>
Horizons	B-Application
:	I-Application
Software	I-Application
Starter	I-Application
Pack	I-Application
is	O
a	O
software	O
compilation	O
for	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
,	O
designed	O
by	O
Psion	B-Application
Software	I-Application
Ltd	I-Application
and	O
published	O
by	O
Sinclair	O
Research	O
Ltd	O
in	O
1982	O
.	O
</s>
<s>
It	O
was	O
not	O
released	O
on	O
its	O
own	O
,	O
but	O
came	O
bundled	O
with	O
new	O
ZX	B-Operating_System
Spectrums	I-Operating_System
.	O
</s>
<s>
Side	O
A	O
of	O
the	O
cassette	B-Device
tape	I-Device
contains	O
lessons	O
and	O
tutorials	O
pertaining	O
to	O
the	O
Spectrum	O
and	O
Side	O
B	O
contains	O
eight	O
programmes	O
written	O
in	O
BASIC	O
.	O
</s>
<s>
The	O
final	O
programme	O
is	O
a	O
glossary	O
of	O
ZX	B-Operating_System
Spectrum	I-Operating_System
BASIC	O
keywords	O
.	O
</s>
<s>
Thro	O
 '	O
the	O
Wall	O
is	O
a	O
Breakout	B-Application
clone	I-Application
which	O
,	O
while	O
basic	O
,	O
was	O
described	O
as	O
very	O
addictive	O
.	O
</s>
<s>
Bubblesort	B-Algorithm
is	O
an	O
implementation	O
of	O
the	O
bubble	B-Algorithm
sort	I-Algorithm
sorting	B-Algorithm
algorithm	I-Algorithm
.	O
</s>
<s>
At	O
any	O
point	O
in	O
time	O
,	O
one	O
could	O
pause	O
the	O
simulation	O
and	O
save	O
to	O
the	O
audio	B-Device
cassette	I-Device
by	O
pressing	O
'	O
Record	O
 '	O
on	O
the	O
connected	O
remote	O
tape	O
recorder	O
,	O
then	O
later	O
resume	O
the	O
simulation	O
on	O
the	O
Spectrum	O
from	O
that	O
point	O
.	O
</s>
<s>
Draw	O
is	O
a	O
basic	O
object-based	O
drawing	B-Application
utility	I-Application
.	O
</s>
<s>
Character	O
Generator	O
is	O
a	O
utility	O
for	O
editing	O
the	O
ZX	B-Operating_System
Spectrum	I-Operating_System
UDGs	O
(	O
user	O
defined	O
graphics	O
)	O
.	O
</s>
<s>
Beating	B-Application
of	O
Waves	O
plots	O
the	O
sum	O
of	O
two	O
sine	O
waves	O
.	O
</s>
