<s>
Workbench	B-Operating_System
is	O
the	O
desktop	O
environment	O
and	O
graphical	O
file	B-Application
manager	I-Application
of	O
AmigaOS	B-Application
developed	O
by	O
Commodore	O
International	O
for	O
their	O
Amiga	B-Device
line	O
of	O
computers	O
.	O
</s>
<s>
Workbench	B-Operating_System
provides	O
the	O
user	O
with	O
a	O
graphical	B-Application
interface	I-Application
to	O
work	O
with	O
file	B-Application
systems	I-Application
and	O
launch	O
applications	O
.	O
</s>
<s>
It	O
uses	O
a	O
workbench	B-Operating_System
metaphor	O
(	O
in	O
place	O
of	O
the	O
more	O
common	O
desktop	B-Application
metaphor	I-Application
)	O
for	O
representing	O
file	B-Application
system	I-Application
organisation	O
.	O
</s>
<s>
"	O
Workbench	B-Operating_System
"	O
was	O
also	O
the	O
name	O
originally	O
given	O
to	O
the	O
entire	O
Amiga	B-Application
operating	I-Application
system	I-Application
up	O
until	O
version	O
3.1	O
.	O
</s>
<s>
From	O
release	O
3.5	O
the	O
operating	B-General_Concept
system	I-General_Concept
was	O
renamed	O
"	O
AmigaOS	B-Application
"	O
and	O
subsequently	O
"	O
Workbench	B-Operating_System
"	O
refers	O
to	O
the	O
native	O
file	B-Application
manager	I-Application
only	O
.	O
</s>
<s>
The	O
Amiga	B-Operating_System
Workbench	I-Operating_System
uses	O
the	O
metaphor	O
of	O
a	O
workbench	B-Operating_System
(	O
i.e.	O
</s>
<s>
a	O
workbench	B-Operating_System
for	O
manual	O
labor	O
)	O
,	O
rather	O
than	O
the	O
now-standard	O
desktop	B-Application
metaphor	I-Application
,	O
for	O
representing	O
file	B-Application
system	I-Application
organization	O
.	O
</s>
<s>
The	O
desktop	O
itself	O
is	O
called	O
Workbench	B-Operating_System
and	O
uses	O
the	O
following	O
representations	O
:	O
drawers	O
(	O
instead	O
of	O
folders	O
)	O
for	O
directories	O
,	O
tools	O
for	O
executable	O
programs	O
,	O
projects	O
for	O
data	O
files	O
,	O
and	O
a	O
trash	B-Application
can	I-Application
as	O
a	O
folder	O
intended	O
to	O
contain	O
deleted	O
files	O
.	O
</s>
<s>
These	O
representations	O
may	O
be	O
considered	O
somewhat	O
unusual	O
by	O
a	O
modern	O
user	O
,	O
but	O
at	O
the	O
time	O
there	O
were	O
no	O
commonly	O
accepted	O
metaphors	O
and	O
Commodore	O
chose	O
to	O
use	O
different	O
idioms	O
from	O
their	O
competitors	O
(	O
Apple	O
had	O
already	O
pursued	O
legal	O
action	O
to	O
prevent	O
other	O
software	O
companies	O
from	O
offering	O
graphical	B-Application
user	I-Application
interfaces	I-Application
similar	O
to	O
its	O
own	O
)	O
.	O
</s>
<s>
Workbench	B-Operating_System
is	O
a	O
spatial	O
file	B-Application
manager	I-Application
in	O
the	O
sense	O
that	O
it	O
uses	O
a	O
spatial	O
metaphor	O
to	O
represent	O
files	O
and	O
folders	O
as	O
if	O
they	O
are	O
real	O
physical	O
objects	O
.	O
</s>
<s>
Workbench	B-Operating_System
utilizes	O
the	O
Amiga	B-Device
's	O
native	O
windowing	O
system	O
called	O
Intuition	B-Application
to	O
provide	O
the	O
graphical	B-Application
user	I-Application
interface	I-Application
.	O
</s>
<s>
Intuition	B-Application
manages	O
the	O
rendering	O
of	O
screens	O
,	O
windows	O
,	O
and	O
gadgets	O
(	O
graphical	O
elements	O
,	O
equivalent	O
to	O
widgets	O
)	O
.	O
</s>
<s>
Later	O
versions	O
of	O
AmigaOS	B-Application
enhanced	O
the	O
interface	O
with	O
more	O
complex	O
object-oriented	B-Language
widget	O
systems	O
,	O
such	O
as	O
gadtools.library	O
and	O
BOOPSI	B-Device
(	O
AmigaOS	B-Application
2.0	O
and	O
later	O
)	O
and	O
ReAction	B-Library
(	O
AmigaOS	B-Application
3.5	O
and	O
later	O
)	O
.	O
</s>
<s>
Intuition	B-Application
also	O
handles	O
user	O
input	O
events	O
,	O
such	O
as	O
,	O
input	O
from	O
the	O
keyboard	O
and	O
mouse	O
.	O
</s>
<s>
Workbench	B-Operating_System
requires	O
a	O
two	O
button	O
mouse	O
,	O
where	O
right	O
click	O
operates	O
pull-down	O
menus	O
and	O
left	O
click	O
is	O
used	O
for	O
all	O
other	O
purposes	O
.	O
</s>
<s>
The	O
underlying	O
AmigaOS	B-Application
allows	O
the	O
Workbench	B-Operating_System
to	O
launch	O
multiple	O
applications	O
that	O
can	O
execute	O
concurrently	O
.	O
</s>
<s>
This	O
is	O
achieved	O
through	O
Exec	B-Operating_System
,	O
the	O
Amiga	B-Device
's	O
multi-tasking	O
kernel	O
,	O
which	O
handles	O
memory	B-General_Concept
management	I-General_Concept
,	O
message	B-Architecture
passing	I-Architecture
,	O
and	O
task	O
scheduling	O
.	O
</s>
<s>
Applications	O
launched	O
from	O
Workbench	B-Operating_System
could	O
report	O
their	O
success	O
back	O
to	O
Workbench	B-Operating_System
,	O
but	O
this	O
was	O
not	O
a	O
requirement	O
and	O
few	O
actually	O
did	O
.	O
</s>
<s>
Workbench	B-Operating_System
itself	O
has	O
always	O
been	O
a	O
disk-based	O
component	O
,	O
though	O
much	O
of	O
the	O
underlying	O
functionality	O
is	O
stored	O
in	O
the	O
Amiga	B-Device
's	O
Kickstart	B-Device
firmware	O
,	O
usually	O
stored	O
in	O
ROM	B-Device
.	O
</s>
<s>
As	O
a	O
consequence	O
,	O
it	O
is	O
necessary	O
to	O
boot	O
from	O
a	O
system	O
disk	O
to	O
launch	O
Workbench	B-Operating_System
.	O
</s>
<s>
This	O
setup	O
streamlines	O
the	O
process	O
of	O
launching	O
games	O
(	O
which	O
typically	O
do	O
not	O
require	O
Workbench	B-Operating_System
)	O
and	O
ensures	O
that	O
memory	O
is	O
not	O
used	O
unnecessarily	O
by	O
the	O
OS	O
in	O
memory-limited	O
systems	O
.	O
</s>
<s>
Workbench	B-Operating_System
was	O
shipped	O
with	O
all	O
Amiga	B-Device
models	O
from	O
Commodore	O
.	O
</s>
<s>
Workbench	B-Operating_System
was	O
provided	O
either	O
on	O
floppy	B-Device
disk	I-Device
or	O
later	O
(	O
as	O
part	O
of	O
AmigaOS	B-Application
)	O
on	O
CD-ROM	B-Device
.	O
</s>
<s>
Initially	O
,	O
Workbench	B-Operating_System
was	O
designed	O
to	O
be	O
launched	O
and	O
operate	O
from	O
floppy	B-Device
disk	I-Device
(	O
or	O
other	O
removable	B-Device
media	I-Device
)	O
.	O
</s>
<s>
Later	O
versions	O
could	O
be	O
installed	O
on	O
hard	B-Device
disk	I-Device
,	O
for	O
which	O
an	O
installer	B-Application
was	O
developed	O
for	O
use	O
with	O
AmigaOS	B-Application
2.0	O
and	O
later	O
.	O
</s>
<s>
AmigaOS	B-Application
(	O
including	O
Workbench	B-Operating_System
)	O
often	O
came	O
pre-installed	O
on	O
systems	O
shipped	O
with	O
hard	B-Device
disks	I-Device
.	O
</s>
<s>
Up	O
until	O
release	O
3.1	O
of	O
the	O
Amiga	B-Device
's	O
operating	B-General_Concept
system	I-General_Concept
,	O
Commodore	O
used	O
Workbench	B-Operating_System
to	O
refer	O
to	O
the	O
entire	O
Amiga	B-Application
operating	I-Application
system	I-Application
.	O
</s>
<s>
As	O
a	O
consequence	O
Workbench	B-Operating_System
was	O
commonly	O
used	O
to	O
refer	O
to	O
both	O
the	O
operating	B-General_Concept
system	I-General_Concept
and	O
the	O
file	B-Application
manager	I-Application
component	O
.	O
</s>
<s>
For	O
end	O
users	O
Workbench	B-Operating_System
was	O
often	O
synonymous	O
with	O
AmigaOS	B-Application
.	O
</s>
<s>
From	O
version	O
3.5	O
the	O
OS	O
was	O
renamed	O
"	O
AmigaOS	B-Application
"	O
and	O
pre-3.5	O
versions	O
were	O
also	O
retroactively	O
referred	O
to	O
as	O
"	O
AmigaOS	B-Application
"	O
(	O
rather	O
than	O
Workbench	B-Operating_System
)	O
.	O
</s>
<s>
Subsequently	O
,	O
"	O
Workbench	B-Operating_System
"	O
refers	O
to	O
the	O
native	O
graphical	O
file	B-Application
manager	I-Application
only	O
.	O
</s>
<s>
From	O
its	O
inception	O
,	O
Workbench	B-Operating_System
offered	O
a	O
highly	O
customizable	O
interface	O
.	O
</s>
<s>
Workbench	B-Operating_System
1.0	O
was	O
released	O
with	O
the	O
first	O
Amiga	B-Device
,	O
the	O
Amiga	B-Device
1000	I-Device
,	O
in	O
1985	O
.	O
</s>
<s>
The	O
1.x	O
versions	O
of	O
Workbench	B-Operating_System
used	O
a	O
blue-and-orange	O
color	O
scheme	O
,	O
designed	O
to	O
give	O
high	O
contrast	O
on	O
even	O
the	O
worst	O
of	O
television	O
screens	O
(	O
the	O
colors	O
can	O
be	O
changed	O
by	O
the	O
user	O
)	O
.	O
</s>
<s>
Versions	O
1.1	O
consists	O
mostly	O
of	O
bug	O
fixes	O
and	O
,	O
like	O
version	O
1.0	O
,	O
was	O
distributed	O
for	O
the	O
Amiga	B-Device
1000	I-Device
only	O
.	O
</s>
<s>
The	O
user	O
was	O
free	O
to	O
create	O
and	O
modify	O
system	O
and	O
user	O
icons	O
,	O
while	O
Atari	B-Application
TOS	I-Application
featured	O
only	O
default	O
system	O
icons	O
whose	O
appearance	O
could	O
not	O
be	O
modified	O
and	O
customizing	O
icons	O
on	O
the	O
Macintosh	O
required	O
using	O
ResEdit	B-Operating_System
.	O
</s>
<s>
Users	O
could	O
customize	O
four	O
display	O
colors	O
and	O
choose	O
from	O
two	O
resolutions	O
:	O
or	O
(	O
interlaced	O
)	O
on	O
NTSC	O
,	O
or	O
or	O
on	O
PAL	B-Language
systems	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
gauge	O
meter	O
showing	O
the	O
free	O
space	O
on	O
a	O
file	B-Application
system	I-Application
was	O
replaced	O
with	O
a	O
percentage	O
in	O
Workbench	B-Operating_System
2.0	O
.	O
</s>
<s>
Under	O
Workbench	B-Operating_System
1.x	O
,	O
right	O
clicking	O
on	O
icons	O
opens	O
a	O
display	O
of	O
the	O
files	O
metadata	O
,	O
whereas	O
from	O
Workbench	B-Operating_System
2.0	O
right	O
clicking	O
activates	O
pull-down	O
menus	O
only	O
.	O
</s>
<s>
Workbench	B-Operating_System
2.0	O
was	O
released	O
with	O
the	O
launch	O
of	O
the	O
Amiga	B-Device
3000	I-Device
in	O
1990	O
.	O
</s>
<s>
Until	O
AmigaOS	B-Application
2.0	O
there	O
was	O
no	O
unified	O
look	B-Application
and	I-Application
feel	I-Application
design	O
standard	O
and	O
application	O
developers	O
had	O
to	O
write	O
their	O
own	O
widgets	O
(	O
both	O
buttons	O
and	O
menus	O
)	O
if	O
they	O
wished	O
to	O
enhance	O
the	O
already-meager	O
selection	O
of	O
standard	O
basic	O
widgets	O
provided	O
by	O
Intuition	B-Application
.	O
</s>
<s>
With	O
Workbench	B-Operating_System
2.0	O
gadtools.library	O
was	O
created	O
,	O
which	O
provided	O
standard	O
widget	O
sets	O
.	O
</s>
<s>
The	O
Amiga	B-Device
User	O
Interface	O
Style	O
Guide	O
,	O
was	O
published	O
which	O
explained	O
how	O
applications	O
should	O
be	O
laid	O
out	O
for	O
consistency	O
.	O
</s>
<s>
Intuition	B-Application
was	O
improved	O
with	O
BOOPSI	B-Device
(	O
Basic	O
Object	B-Language
Oriented	I-Language
Programming	I-Language
system	O
for	O
Intuition	B-Application
)	O
which	O
enhanced	O
the	O
system	O
with	O
an	O
object-oriented	B-Language
interface	O
to	O
define	O
a	O
system	O
of	O
classes	O
in	O
which	O
every	O
class	O
individuate	O
a	O
single	O
widget	O
or	O
describes	O
an	O
interface	O
event	O
.	O
</s>
<s>
It	O
can	O
be	O
used	O
to	O
program	O
object	B-Language
oriented	I-Language
interfaces	O
into	O
Amiga	B-Device
at	O
any	O
level	O
.	O
</s>
<s>
As	O
of	O
Workbench	B-Operating_System
2.0	O
all	O
files	O
became	O
visible	O
as	O
icons	O
without	O
the	O
need	O
of	O
associated	O
.info	O
files	O
,	O
thus	O
streamlining	O
the	O
process	O
of	O
starting	O
executables	O
in	O
the	O
GUI	B-Application
.	O
</s>
<s>
Workbench	B-Operating_System
2.0	O
also	O
added	O
support	O
for	O
public	O
screens	O
.	O
</s>
<s>
Instead	O
of	O
the	O
Workbench	B-Operating_System
screen	O
being	O
the	O
only	O
shareable	O
screen	O
,	O
applications	O
could	O
create	O
their	O
own	O
named	O
screens	O
to	O
share	O
with	O
other	O
applications	O
.	O
</s>
<s>
Workbench	B-Operating_System
2.0	O
included	O
and	O
integrated	O
ARexx	B-Operating_System
,	O
allowing	O
users	O
to	O
control	O
the	O
system	O
and	O
other	O
programs	O
from	O
user	O
scripts	O
.	O
</s>
<s>
Workbench	B-Operating_System
2.0	O
introduced	O
AmigaGuide	B-Operating_System
,	O
a	O
simple	O
text-only	O
hypertext	O
markup	O
scheme	O
and	O
browser	O
,	O
for	O
providing	O
online	O
help	O
inside	O
applications	O
.	O
</s>
<s>
It	O
also	O
introduced	O
Installer	B-Application
,	O
a	O
standard	O
software	O
installation	O
program	O
,	O
driven	O
by	O
a	O
LISP-like	O
scripting	O
language	O
.	O
</s>
<s>
Finally	O
,	O
Workbench	B-Operating_System
2.0	O
rectified	O
the	O
problem	O
of	O
applications	O
hooking	O
directly	O
into	O
the	O
input-events	O
stream	O
to	O
capture	O
keyboard	O
and	O
mouse	O
movements	O
,	O
sometimes	O
locking	O
up	O
the	O
whole	O
system	O
.	O
</s>
<s>
Workbench	B-Operating_System
2.0	O
provided	O
Commodities	O
,	O
a	O
standard	O
interface	O
for	O
modifying	O
or	O
scanning	O
input	O
events	O
.	O
</s>
<s>
Version	O
3.0	O
was	O
originally	O
shipped	O
with	O
the	O
Amiga	B-Device
1200	O
and	O
Amiga	B-Device
4000	O
computers	O
.	O
</s>
<s>
Version	O
3.0	O
added	O
datatype	O
support	O
and	O
Workbench	B-Operating_System
could	O
load	O
any	O
background	O
image	O
in	O
any	O
format	O
,	O
as	O
long	O
as	O
the	O
required	O
datatype	O
was	O
installed	O
.	O
</s>
<s>
Localisation	O
was	O
added	O
to	O
allow	O
Workbench	B-Operating_System
,	O
and	O
any	O
installed	O
programs	O
that	O
had	O
localization	O
,	O
to	O
appear	O
in	O
any	O
supported	O
language	O
.	O
</s>
<s>
The	O
established	O
AmigaGuide	B-Operating_System
hypertext	O
system	O
gained	O
more	O
usability	O
by	O
using	O
document	O
links	O
pointing	O
to	O
mediafiles	O
,	O
for	O
example	O
pictures	O
or	O
sounds	O
,	O
all	O
recognized	O
by	O
the	O
datatypes	O
.	O
</s>
<s>
Following	O
Commodore	O
's	O
demise	O
and	O
around	O
six	O
years	O
after	O
Workbench	B-Operating_System
3.1	O
was	O
released	O
,	O
Haage	O
&	O
Partner	O
were	O
commissioned	O
to	O
update	O
AmigaOS	B-Application
,	O
which	O
was	O
released	O
in	O
1999	O
as	O
a	O
software-only	O
update	O
for	O
existing	O
systems	O
.	O
</s>
<s>
The	O
Workbench	B-Operating_System
look	B-Application
and	I-Application
feel	I-Application
,	O
though	O
still	O
largely	O
based	O
on	O
the	O
earlier	O
3.1	O
release	O
,	O
was	O
revised	O
somewhat	O
,	O
with	O
an	O
improved	O
user	O
interface	O
based	O
on	O
ReAction	B-Library
,	O
improved	O
icon	O
rendering	O
and	O
official	O
support	O
for	O
true	O
color	O
backdrops	O
.	O
</s>
<s>
These	O
releases	O
included	O
support	O
for	O
existing	O
third-party	O
GUI	B-Application
enhancements	O
,	O
such	O
as	O
NewIcons	B-Operating_System
,	O
by	O
integrating	O
these	O
patches	O
into	O
the	O
system	O
.	O
</s>
<s>
These	O
replaced	O
the	O
default	O
all-metal	O
gray	O
4/8	O
color	O
scheme	O
used	O
on	O
AmigaOS	B-Application
from	O
release	O
2.0	O
to	O
3.1	O
.	O
</s>
<s>
The	O
3.9	O
release	O
of	O
Workbench	B-Operating_System
was	O
again	O
developed	O
by	O
Haage&Partner	O
and	O
released	O
in	O
2000	O
.	O
</s>
<s>
This	O
new	O
Workbench	B-Operating_System
,	O
called	O
Workbench	B-Operating_System
4.0	O
,	O
has	O
been	O
rewritten	O
to	O
become	O
fully	O
PowerPC	B-Architecture
compatible	O
.	O
</s>
<s>
Drag	O
and	O
drop	O
of	O
Workbench	B-Operating_System
icons	O
between	O
different	O
screens	O
is	O
also	O
possible	O
.	O
</s>
<s>
Additionally	O
,	O
Workbench	B-Operating_System
4.0	O
includes	O
a	O
new	O
version	O
of	O
Amidock	O
,	O
TrueType/OpenType	O
fonts	O
and	O
movie	O
player	O
with	O
DivX	B-Application
and	O
MPEG-4	B-Algorithm
support	O
.	O
</s>
<s>
Additional	O
enhancements	O
include	O
:	O
a	O
new	O
icon	O
set	O
to	O
complement	O
higher	O
screen	O
resolutions	O
,	O
new	O
window	O
themes	O
including	O
drop	O
shadows	O
,	O
AmiDock	O
with	O
true	O
transparency	O
,	O
scalable	O
icons	O
,	O
and	O
a	O
Workbench	B-Operating_System
auto-update	O
feature	O
.	O
</s>
<s>
The	O
icons	O
that	O
Workbench	B-Operating_System
uses	O
to	O
represent	O
the	O
files	O
in	O
a	O
volume	O
or	O
a	O
drawer	O
are	O
stored	O
in	O
special	O
.info	O
files	O
,	O
with	O
the	O
name	O
of	O
the	O
.info	O
file	O
matching	O
the	O
name	O
of	O
the	O
file	O
it	O
represents	O
.	O
</s>
<s>
For	O
example	O
,	O
the	O
icon	O
for	O
NotePad	O
,	O
a	O
text	B-Application
editor	I-Application
,	O
is	O
found	O
in	O
the	O
file	O
NotePad.info	O
.	O
</s>
<s>
This	O
.info	O
extension	O
is	O
the	O
only	O
file	O
extension	O
required	O
by	O
AmigaOS	B-Application
.	O
</s>
<s>
The	O
icon	O
also	O
specifies	O
the	O
type	O
of	O
the	O
file	O
,	O
as	O
used	O
by	O
Workbench	B-Operating_System
.	O
</s>
<s>
Workbench	B-Operating_System
recognises	O
five	O
different	O
file	O
types	O
:	O
</s>
<s>
Volume	O
:	O
A	O
physical	O
disk	O
or	O
a	O
RAM	B-Application
disk	I-Application
.	O
</s>
<s>
Garbage	O
:	O
The	O
Trashcan	O
–	O
a	O
deleted	O
file	O
backup	O
,	O
which	O
works	O
in	O
a	O
similar	O
way	O
to	O
the	O
'	O
Recycle	B-Application
bin	I-Application
 '	O
in	O
Microsoft	B-Application
Windows	I-Application
.	O
</s>
<s>
App	O
Icon	O
:	O
An	O
icon	O
which	O
will	O
be	O
used	O
as	O
(	O
part	O
of	O
)	O
the	O
GUI	B-Application
for	O
an	O
application	O
.	O
</s>
<s>
Of	O
these	O
three	O
file	O
types	O
,	O
only	O
"	O
App	O
Icons	O
"	O
currently	O
are	O
used	O
by	O
any	O
part	O
of	O
Workbench/AmigaOS	O
.	O
</s>
<s>
For	O
example	O
,	O
if	O
you	O
add	O
a	O
tool	O
icon	O
to	O
a	O
text	O
document	O
file	O
,	O
AmigaOS	B-Application
will	O
tell	O
you	O
the	O
file	O
"	O
is	O
not	O
executable	O
"	O
or	O
"	O
is	O
not	O
of	O
required	O
type	O
"	O
as	O
it	O
has	O
no	O
'	O
e'-protection-flag	O
(	O
AmigaDOS	O
:	O
Hold	O
,	O
Script	O
,	O
Pure	O
,	O
Archived	O
,	O
Read	O
,	O
Writeable	O
,	O
Executable	O
,	O
Deletable	O
)	O
nor	O
does	O
it	O
have	O
the	O
startup	O
header	O
of	O
an	O
executable	O
.	O
</s>
<s>
Also	O
,	O
stripping	O
an	O
'	O
application	O
 '	O
from	O
its	O
counterpart	O
icon	O
file	O
(	O
application.info	O
)	O
will	O
not	O
render	O
this	O
application	O
useless	O
;	O
it	O
still	O
remains	O
executable	O
,	O
it	O
will	O
run	O
,	O
only	O
missing	O
the	O
(	O
required	O
)	O
options	O
and	O
arguments	O
delivered	O
from	O
workbench	B-Operating_System
via	O
icons	O
"	O
tool	O
types	O
"	O
,	O
e.g.	O
</s>
<s>
Starting	O
in	O
Workbench	B-Operating_System
2.x	O
,	O
a	O
file	O
without	O
a	O
.info	O
counterpart	O
(	O
such	O
as	O
a	O
file	O
on	O
non-native	O
media	O
)	O
is	O
represented	O
by	O
the	O
default	O
system	O
icon	O
for	O
one	O
of	O
the	O
five	O
types	O
listed	O
above	O
.	O
</s>
<s>
Icon-less	O
files	O
are	O
only	O
displayed	O
in	O
this	O
manner	O
if	O
the	O
drawer	O
is	O
configured	O
to	O
[	O
Show	O
All	O
Files ]	O
–	O
if	O
this	O
option	O
is	O
not	O
set	O
(	O
which	O
is	O
the	O
case	O
in	O
Workbench	B-Operating_System
1.x	O
)	O
,	O
such	O
files	O
will	O
not	O
appear	O
at	O
all	O
and	O
can	O
only	O
be	O
seen	O
from	O
a	O
CLI	O
.	O
</s>
<s>
The	O
colours	O
used	O
in	O
the	O
icon	O
are	O
normally	O
only	O
stored	O
as	O
indices	O
to	O
the	O
Amiga	B-Operating_System
Workbench	I-Operating_System
screen	O
's	O
current	O
palette	O
.	O
</s>
<s>
This	O
problem	O
was	O
partly	O
solved	O
by	O
a	O
third-party	O
system	O
called	O
NewIcons	B-Operating_System
,	O
which	O
adds	O
additional	O
features	O
to	O
the	O
standard	O
.info	O
files	O
.	O
</s>
<s>
Unlike	O
normal	O
Workbench	B-Operating_System
icons	O
,	O
NewIcons	B-Operating_System
include	O
actual	O
RGB	O
colour	O
information	O
,	O
and	O
the	O
system	O
tries	O
its	O
best	O
to	O
match	O
the	O
icons	O
 '	O
colour	O
hues	O
to	O
those	O
in	O
the	O
screen	O
palette	O
.	O
</s>
<s>
Since	O
AmigaOS	B-Application
3.5	O
,	O
Workbench	B-Operating_System
supports	O
icons	O
with	O
up	O
to	O
256	O
colors	O
.	O
</s>
<s>
This	O
release	O
of	O
AmigaOS	B-Application
features	O
the	O
GlowIcons	B-Operating_System
icon	O
set	O
by	O
Matt	O
Chaput	O
.	O
</s>
<s>
With	O
AmigaOS	B-Application
3.5	O
,	O
a	O
screen-palette-independent	O
system	O
is	O
used	O
.	O
</s>
<s>
Both	O
AROS	B-Application
and	O
MorphOS	B-Operating_System
support	O
PNG	O
icons	O
natively	O
.	O
</s>
<s>
On	O
Amiga	B-Operating_System
Workbench	I-Operating_System
PNG	O
icons	O
are	O
supported	O
through	O
plugins	O
.	O
</s>
<s>
In	O
comparison	O
to	O
the	O
competing	O
Mac	B-Application
OS	I-Application
and	O
Atari	O
,	O
the	O
early	O
Amiga	B-Operating_System
Workbench	I-Operating_System
(	O
pre-Workbench	O
2.04	O
)	O
featured	O
,	O
as	O
the	O
default	O
,	O
a	O
4	O
color	O
blue	O
desktop	O
screen	O
with	O
color	O
icons	O
at	O
NTSC	O
American	O
standard	O
or	O
on	O
European	O
PAL	B-Language
television	O
sets	O
,	O
in	O
contrast	O
to	O
the	O
black	O
and	O
white	O
interface	O
presented	O
by	O
the	O
Mac	O
.	O
</s>
<s>
The	O
Amiga	B-Device
user	O
was	O
also	O
free	O
to	O
create	O
and	O
modify	O
system	O
and	O
program	O
icons	O
,	O
while	O
Atari	B-Application
TOS	I-Application
featured	O
only	O
default	O
system	O
icons	O
whose	O
appearance	O
could	O
not	O
be	O
modified	O
.	O
</s>
<s>
Workbench	B-Operating_System
contributed	O
many	O
other	O
unique	O
features/philosophies	O
to	O
intuitive	O
GUI	B-Application
design	O
(	O
starting	O
with	O
version	O
2.04/2.1	O
)	O
:	O
</s>
<s>
Indented	O
controls	O
indicated	O
information-only	O
text	O
,	O
surface-level	O
controls	O
represented	O
labels	O
for	O
GUI	B-Application
elements	O
,	O
and	O
raised	O
GUI	B-Application
elements	O
indicated	O
data	O
editable	O
by	O
,	O
or	O
interactive	O
with	O
,	O
the	O
user	O
.	O
</s>
<s>
Much	O
like	O
the	O
"	O
File	O
"	O
and	O
"	O
Edit	O
"	O
menus	O
became	O
standard	O
on	O
most	O
GUIs	B-Application
,	O
Workbench	B-Operating_System
implemented	O
the	O
concept	O
of	O
a	O
"	O
Settings	O
"	O
menu	O
designed	O
to	O
standardize	O
the	O
location	O
for	O
all	O
options	O
within	O
an	O
application	O
.	O
</s>
<s>
Commodities	O
Exchange	O
:	O
a	O
consistent	O
programming	O
standard	O
and	O
GUI	B-Application
for	O
easy	O
launch	O
,	O
control	O
,	O
and	O
removal	O
of	O
all	O
TSRs	O
or	O
background-process	O
utilities/mini	O
-apps	O
.	O
</s>
<s>
Locale	O
:	O
an	O
OS	O
and	O
application-wide	O
GUI	B-Application
that	O
provided	O
the	O
means	O
for	O
implementing	O
user-selectable	O
language	O
,	O
time	O
,	O
and	O
other	O
locale-specific	O
settings	O
.	O
</s>
<s>
Before	O
Workbench	B-Operating_System
2.0	O
,	O
there	O
were	O
no	O
user	O
interface	O
design	O
guidelines	O
,	O
so	O
the	O
look	B-Application
and	I-Application
feel	I-Application
of	O
menu	O
options	O
could	O
be	O
different	O
from	O
one	O
application	O
to	O
the	O
next	O
(	O
i.e.	O
</s>
<s>
This	O
was	O
seen	O
as	O
a	O
problem	O
with	O
the	O
Amiga	B-Device
by	O
its	O
detractors	O
.	O
</s>
<s>
The	O
historical	O
GUI	B-Application
site	O
GUIdebook	O
calls	O
Amiga	B-Operating_System
Workbench	I-Operating_System
a	O
"	O
unique	O
(	O
if	O
slightly	O
chaotic	O
)	O
GUI	B-Application
for	O
Amiga	B-Device
machines	O
"	O
.	O
</s>
<s>
The	O
Ren'Py	B-Language
visual	O
novel	O
Digital	B-Application
:	I-Application
A	I-Application
Love	I-Application
Story	I-Application
uses	O
an	O
Amiga	B-Operating_System
Workbench	I-Operating_System
1.0	O
design	O
(	O
known	O
as	O
Amie	O
Workbench	B-Operating_System
within	O
the	O
game	O
)	O
.	O
</s>
