<s>
In	O
computing	O
,	O
Philip	B-Device
's	I-Device
Music	I-Device
Writer	I-Device
or	O
PMW	O
,	O
formerly	O
known	O
as	O
Philip	B-Device
's	I-Device
Music	I-Device
Scribe	I-Device
or	O
PMS	O
,	O
is	O
a	O
music	O
scorewriter	B-Application
written	O
by	O
Philip	O
Hazel	O
.	O
</s>
<s>
It	O
was	O
mentioned	O
in	O
the	O
Center	O
for	O
Computer	O
Assisted	O
Research	O
in	O
the	O
Humanities	O
publication	O
Computing	O
in	O
Musicology	O
in	O
1993	O
and	O
remains	O
under	O
active	O
development	O
as	O
free	B-Application
software	I-Application
.	O
</s>
<s>
It	O
was	O
written	O
in	O
BCPL	B-Language
for	O
an	O
IBM	B-Device
mainframe	I-Device
at	O
the	O
University	O
of	O
Cambridge	O
and	O
also	O
ran	O
on	O
a	O
system	O
running	O
Panos	B-Operating_System
,	O
which	O
was	O
later	O
sold	O
as	O
the	O
Acorn	B-Device
Business	I-Device
Computer	I-Device
.	O
</s>
<s>
The	O
program	O
was	O
subsequently	O
ported	O
to	O
Acorn	O
's	O
Archimedes	B-Device
running	O
Arthur	O
and	O
later	O
ported	O
to	O
Unix-like	B-Operating_System
systems	I-Operating_System
.	O
</s>
<s>
It	O
began	O
as	O
commercial	B-Application
software	I-Application
and	O
was	O
later	O
released	O
as	O
free	B-Application
software	I-Application
.	O
</s>
<s>
On-screen	O
proof-reading	O
was	O
rudimentary	O
on	O
the	O
Acorn	B-Device
Business	I-Device
Computer	I-Device
,	O
which	O
used	O
the	O
BBC	B-Device
Micro	I-Device
for	O
screen	O
output	O
.	O
</s>
<s>
The	O
Arthur	O
version	O
initially	O
ran	O
at	O
the	O
command	B-Application
line	I-Application
,	O
but	O
was	O
later	O
converted	O
to	O
use	O
the	O
WIMP	B-Application
and	O
outline	O
fonts	O
.	O
</s>
<s>
Sibelius	B-Device
was	O
released	O
in	O
1993	O
.	O
</s>
<s>
Hazel	O
later	O
observed	O
that	O
composers	B-Application
and	O
arrangers	O
generally	O
preferred	O
such	O
WYSIWYG	B-Application
editors	I-Application
,	O
while	O
music	B-Application
engravers	I-Application
tended	O
to	O
prefer	O
text	O
input	O
scorewriters	B-Application
,	O
because	O
of	O
the	O
increased	O
degree	O
of	O
control	O
available	O
.	O
</s>
<s>
The	O
Linux	B-Application
version	O
(	O
ported	O
in	O
2003	O
)	O
is	O
"	O
back	O
to	O
its	O
roots	O
"	O
,	O
being	O
command	B-Application
line	I-Application
driven	O
.	O
</s>
<s>
The	O
software	O
uses	O
PostScript	B-Language
fonts	O
named	O
PMW-Music	O
and	O
PMW-Alpha	O
,	O
which	O
were	O
conceived	O
by	O
the	O
author	O
and	O
Richard	O
Hallas	O
.	O
</s>
<s>
,	O
it	O
remains	O
under	O
active	O
development	O
as	O
free	B-Application
software	I-Application
.	O
</s>
<s>
Musical	O
notation	O
is	O
provided	O
to	O
the	O
software	O
in	O
textual	O
form	O
,	O
which	O
generates	O
output	O
to	O
a	O
printer	O
or	O
for	O
saving	O
in	O
PostScript	B-Language
or	O
Drawfile	B-Device
format	O
.	O
</s>
