<s>
YS	B-Language
MegaBasic	I-Language
is	O
a	O
BASIC	B-Language
programming	I-Language
language	I-Language
interpreter	B-Application
for	O
the	O
1982	O
Sinclair	O
Research	O
ZX	B-Operating_System
Spectrum	I-Operating_System
microcomputer	B-Architecture
,	O
written	O
by	O
Mike	O
Leaman	O
.	O
</s>
<s>
The	O
interpreter	B-Application
was	O
available	O
by	O
mail-order	O
from	O
Your	O
Spectrum	O
magazine	O
,	O
hence	O
the	O
name	O
"	O
YS	B-Language
MegaBasic	I-Language
"	O
.	O
</s>
<s>
YS	B-Language
MegaBasic	I-Language
allowed	O
keywords	O
to	O
be	O
spelled	O
out	O
letter-for-letter	O
,	O
which	O
was	O
quicker	O
if	O
the	O
user	O
had	O
fitted	O
a	O
full-size	O
full-travel	O
keyboard	O
to	O
their	O
machine	O
,	O
a	O
very	O
popular	O
modification	O
for	O
serious	O
users	O
.	O
</s>
<s>
This	O
also	O
removed	O
the	O
necessity	O
for	O
memorising	O
the	O
sometimes	O
arcane	O
key	O
combinations	O
necessary	O
to	O
enter	O
less-commonly-used	O
Sinclair	B-Language
BASIC	I-Language
keywords	O
.	O
</s>
<s>
New	O
commands	O
added	O
by	O
YS	B-Language
MegaBasic	I-Language
:	O
</s>
