Codepages
WINDOWS: Windows-1253 (CP1253)

Character table

0x_0 0x_1 0x_2 0x_3 0x_4 0x_5 0x_6 0x_7 0x_8 0x_9 0x_A 0x_B 0x_C 0x_D 0x_E 0x_F
0x0_
<NUL>
00
<SOH>
01
<SOT>
02
<EXT>
03
<EOT>
04
<ENQ>
05
<ACK>
06
<BEL>
07
<BS>
08
<HT>
09
<LF>
0A
<VT>
0B
<FF>
0C
<CR>
0D
<SO>
0E
<SI>
0F
0x1_
<DLE>
10
<DC1>
11
<DC2>
12
<DC3>
13
<DC4>
14
<NAK>
15
<SYN>
16
<ETB>
17
<CAN>
18
<EM>
19
<SUB>
1A
<ESC>
1B
<FS>
1C
<GS>
1D
<RS>
1E
<US>
1F
0x2_
<SP>
20
!
21
"
22
#
23
$
24
%
25
&
26
'
27
(
28
)
29
*
2A
+
2B
,
2C
-
2D
.
2E
/
2F
0x3_
0
30
1
31
2
32
3
33
4
34
5
35
6
36
7
37
8
38
9
39
:
3A
;
3B
<
3C
=
3D
>
3E
?
3F
0x4_
@
40
A
41
B
42
C
43
D
44
E
45
F
46
G
47
H
48
I
49
J
4A
K
4B
L
4C
M
4D
N
4E
O
4F
0x5_
P
50
Q
51
R
52
S
53
T
54
U
55
V
56
W
57
X
58
Y
59
Z
5A
[
5B
\
5C
]
5D
^
5E
_
5F
0x6_
`
60
a
61
b
62
c
63
d
64
e
65
f
66
g
67
h
68
i
69
j
6A
k
6B
l
6C
m
6D
n
6E
o
6F
0x7_
p
70
q
71
r
72
s
73
t
74
u
75
v
76
w
77
x
78
y
79
z
7A
{
7B
|
7C
}
7D
~
7E
<DEL>
7F
0x8_
€
80
�
81
‚
82
ƒ
83
„
84
…
85
†
86
‡
87
�
88
‰
89
�
8A
‹
8B
�
8C
�
8D
�
8E
�
8F
0x9_
�
90
‘
91
’
92
“
93
”
94
•
95
–
96
—
97
�
98
™
99
�
9A
›
9B
�
9C
�
9D
�
9E
�
9F
0xA_
 
A0
΅
A1
Ά
A2
£
A3
¤
A4
¥
A5
¦
A6
§
A7
¨
A8
©
A9
�
AA
«
AB
¬
AC
­
AD
®
AE
―
AF
0xB_
°
B0
±
B1
²
B2
³
B3
΄
B4
µ
B5
B6
·
B7
Έ
B8
Ή
B9
Ί
BA
»
BB
Ό
BC
½
BD
Ύ
BE
Ώ
BF
0xC_
ΐ
C0
Α
C1
Β
C2
Γ
C3
Δ
C4
Ε
C5
Ζ
C6
Η
C7
Θ
C8
Ι
C9
Κ
CA
Λ
CB
Μ
CC
Ν
CD
Ξ
CE
Ο
CF
0xD_
Π
D0
Ρ
D1
�
D2
Σ
D3
Τ
D4
Υ
D5
Φ
D6
Χ
D7
Ψ
D8
Ω
D9
Ϊ
DA
Ϋ
DB
ά
DC
έ
DD
ή
DE
ί
DF
0xE_
ΰ
E0
α
E1
β
E2
γ
E3
δ
E4
ε
E5
ζ
E6
η
E7
θ
E8
ι
E9
κ
EA
λ
EB
μ
EC
ν
ED
ξ
EE
ο
EF
0xF_
π
F0
ρ
F1
ς
F2
σ
F3
τ
F4
υ
F5
φ
F6
χ
F7
ψ
F8
ω
F9
ϊ
FA
ϋ
FB
ό
FC
ύ
FD
ώ
FE
�
FF

Other WINDOWS codepages

Windows-1250 Windows-1251 Windows-1252 Windows-1253 Windows-1254 Windows-1255 Windows-1256 Windows-1257 Windows-1258

UTF-8 Alternatives

Dec Hex Chr Name UTF-8 code point UTF-8 bytes (hex)
0 0x00 <NUL> ANSI x3.4: NULL U+0000 0x00
1 0x01 <SOH> ANSI x3.4: START OF HEADING U+0001 0x01
2 0x02 <SOT> ANSI x3.4: START OF TEXT U+0002 0x02
3 0x03 <EXT> ANSI x3.4: END OF TEXT U+0003 0x03
4 0x04 <EOT> ANSI x3.4: END OF TRANSMISSION U+0004 0x04
5 0x05 <ENQ> ANSI x3.4: ENQUIRY U+0005 0x05
6 0x06 <ACK> ANSI x3.4: ACKNOWLEDGE U+0006 0x06
7 0x07 <BEL> ANSI x3.4: BELL U+0007 0x07
8 0x08 <BS> ANSI x3.4: BACKSPACE U+0008 0x08
9 0x09 <HT> ANSI x3.4: HORIZONTAL TABULATION U+0009 0x09
10 0x0A <LF> ANSI x3.4: LINE FEED U+000A 0x0A
11 0x0B <VT> ANSI x3.4: VERTICAL TABULATION U+000B 0x0B
12 0x0C <FF> ANSI x3.4: FORM FEED U+000C 0x0C
13 0x0D <CR> ANSI x3.4: CARRIAGE RETURN (RETURN) U+000D 0x0D
14 0x0E <SO> ANSI x3.4: SHIFT OUT U+000E 0x0E
15 0x0F <SI> ANSI x3.4: SHIFT IN U+000F 0x0F
16 0x10 <DLE> ANSI x3.4: DATA LINK ESCAPE U+0010 0x10
17 0x11 <DC1> ANSI x3.4: DEVICE CONTROL 1 U+0011 0x11
18 0x12 <DC2> ANSI x3.4: DEVICE CONTROL 2 U+0012 0x12
19 0x13 <DC3> ANSI x3.4: DEVICE CONTROL 3 U+0013 0x13
20 0x14 <DC4> ANSI x3.4: DEVICE CONTROL 4 U+0014 0x14
21 0x15 <NAK> ANSI x3.4: NEGATIVE ACKNOWLEDGE U+0015 0x15
22 0x16 <SYN> ANSI x3.4: SYNCHRONOUS IDLE U+0016 0x16
23 0x17 <ETB> ANSI x3.4: END OF TRANSMISSION BLOCK U+0017 0x17
24 0x18 <CAN> ANSI x3.4: CANCEL U+0018 0x18
25 0x19 <EM> ANSI x3.4: END OF MEDIUM U+0019 0x19
26 0x1A <SUB> ANSI x3.4: SUBSTITUTE U+001A 0x1A
27 0x1B <ESC> ANSI x3.4: ESCAPE U+001B 0x1B
28 0x1C <FS> ANSI x3.4: FILE SEPARATOR U+001C 0x1C
29 0x1D <GS> ANSI x3.4: GROUP SEPARATOR U+001D 0x1D
30 0x1E <RS> ANSI x3.4: RECORD SEPARATOR U+001E 0x1E
31 0x1F <US> ANSI x3.4: UNIT SEPARATOR U+001F 0x1F
32 0x20 <SP> ANSI x3.4: SPACE U+0020 0x20
33 0x21 ! EXCLAMATION MARK U+0021 0x21
34 0x22 " QUOTATION MARK U+0022 0x22
35 0x23 # NUMBER SIGN U+0023 0x23
36 0x24 $ DOLLAR SIGN U+0024 0x24
37 0x25 % PERCENT SIGN U+0025 0x25
38 0x26 & AMPERSAND U+0026 0x26
39 0x27 ' APOSTROPHE U+0027 0x27
40 0x28 ( LEFT PARENTHESIS U+0028 0x28
41 0x29 ) RIGHT PARENTHESIS U+0029 0x29
42 0x2A * ASTERISK U+002A 0x2A
43 0x2B + PLUS SIGN U+002B 0x2B
44 0x2C , COMMA U+002C 0x2C
45 0x2D - HYPHEN-MINUS U+002D 0x2D
46 0x2E . FULL STOP U+002E 0x2E
47 0x2F / SOLIDUS U+002F 0x2F
48 0x30 0 DIGIT ZERO U+0030 0x30
49 0x31 1 DIGIT ONE U+0031 0x31
50 0x32 2 DIGIT TWO U+0032 0x32
51 0x33 3 DIGIT THREE U+0033 0x33
52 0x34 4 DIGIT FOUR U+0034 0x34
53 0x35 5 DIGIT FIVE U+0035 0x35
54 0x36 6 DIGIT SIX U+0036 0x36
55 0x37 7 DIGIT SEVEN U+0037 0x37
56 0x38 8 DIGIT EIGHT U+0038 0x38
57 0x39 9 DIGIT NINE U+0039 0x39
58 0x3A : COLON U+003A 0x3A
59 0x3B ; SEMICOLON U+003B 0x3B
60 0x3C < LESS-THAN SIGN U+003C 0x3C
61 0x3D = EQUALS SIGN U+003D 0x3D
62 0x3E > GREATER-THAN SIGN U+003E 0x3E
63 0x3F ? QUESTION MARK U+003F 0x3F
64 0x40 @ COMMERCIAL AT U+0040 0x40
65 0x41 A LATIN CAPITAL LETTER A U+0041 0x41
66 0x42 B LATIN CAPITAL LETTER B U+0042 0x42
67 0x43 C LATIN CAPITAL LETTER C U+0043 0x43
68 0x44 D LATIN CAPITAL LETTER D U+0044 0x44
69 0x45 E LATIN CAPITAL LETTER E U+0045 0x45
70 0x46 F LATIN CAPITAL LETTER F U+0046 0x46
71 0x47 G LATIN CAPITAL LETTER G U+0047 0x47
72 0x48 H LATIN CAPITAL LETTER H U+0048 0x48
73 0x49 I LATIN CAPITAL LETTER I U+0049 0x49
74 0x4A J LATIN CAPITAL LETTER J U+004A 0x4A
75 0x4B K LATIN CAPITAL LETTER K U+004B 0x4B
76 0x4C L LATIN CAPITAL LETTER L U+004C 0x4C
77 0x4D M LATIN CAPITAL LETTER M U+004D 0x4D
78 0x4E N LATIN CAPITAL LETTER N U+004E 0x4E
79 0x4F O LATIN CAPITAL LETTER O U+004F 0x4F
80 0x50 P LATIN CAPITAL LETTER P U+0050 0x50
81 0x51 Q LATIN CAPITAL LETTER Q U+0051 0x51
82 0x52 R LATIN CAPITAL LETTER R U+0052 0x52
83 0x53 S LATIN CAPITAL LETTER S U+0053 0x53
84 0x54 T LATIN CAPITAL LETTER T U+0054 0x54
85 0x55 U LATIN CAPITAL LETTER U U+0055 0x55
86 0x56 V LATIN CAPITAL LETTER V U+0056 0x56
87 0x57 W LATIN CAPITAL LETTER W U+0057 0x57
88 0x58 X LATIN CAPITAL LETTER X U+0058 0x58
89 0x59 Y LATIN CAPITAL LETTER Y U+0059 0x59
90 0x5A Z LATIN CAPITAL LETTER Z U+005A 0x5A
91 0x5B [ LEFT SQUARE BRACKET U+005B 0x5B
92 0x5C \ REVERSE SOLIDUS U+005C 0x5C
93 0x5D ] RIGHT SQUARE BRACKET U+005D 0x5D
94 0x5E ^ CIRCUMFLEX ACCENT U+005E 0x5E
95 0x5F _ LOW LINE U+005F 0x5F
96 0x60 ` GRAVE ACCENT U+0060 0x60
97 0x61 a LATIN SMALL LETTER A U+0061 0x61
98 0x62 b LATIN SMALL LETTER B U+0062 0x62
99 0x63 c LATIN SMALL LETTER C U+0063 0x63
100 0x64 d LATIN SMALL LETTER D U+0064 0x64
101 0x65 e LATIN SMALL LETTER E U+0065 0x65
102 0x66 f LATIN SMALL LETTER F U+0066 0x66
103 0x67 g LATIN SMALL LETTER G U+0067 0x67
104 0x68 h LATIN SMALL LETTER H U+0068 0x68
105 0x69 i LATIN SMALL LETTER I U+0069 0x69
106 0x6A j LATIN SMALL LETTER J U+006A 0x6A
107 0x6B k LATIN SMALL LETTER K U+006B 0x6B
108 0x6C l LATIN SMALL LETTER L U+006C 0x6C
109 0x6D m LATIN SMALL LETTER M U+006D 0x6D
110 0x6E n LATIN SMALL LETTER N U+006E 0x6E
111 0x6F o LATIN SMALL LETTER O U+006F 0x6F
112 0x70 p LATIN SMALL LETTER P U+0070 0x70
113 0x71 q LATIN SMALL LETTER Q U+0071 0x71
114 0x72 r LATIN SMALL LETTER R U+0072 0x72
115 0x73 s LATIN SMALL LETTER S U+0073 0x73
116 0x74 t LATIN SMALL LETTER T U+0074 0x74
117 0x75 u LATIN SMALL LETTER U U+0075 0x75
118 0x76 v LATIN SMALL LETTER V U+0076 0x76
119 0x77 w LATIN SMALL LETTER W U+0077 0x77
120 0x78 x LATIN SMALL LETTER X U+0078 0x78
121 0x79 y LATIN SMALL LETTER Y U+0079 0x79
122 0x7A z LATIN SMALL LETTER Z U+007A 0x7A
123 0x7B { LEFT CURLY BRACKET U+007B 0x7B
124 0x7C | VERTICAL LINE U+007C 0x7C
125 0x7D } RIGHT CURLY BRACKET U+007D 0x7D
126 0x7E ~ TILDE U+007E 0x7E
127 0x7F <DEL> ANSI x3.4: DELETE U+007F 0x7F
128 0x80 € EURO SIGN U+20AC 0xE282AC
129 0x81 � Undefined
130 0x82 ‚ SINGLE LOW-9 QUOTATION MARK U+201A 0xE2809A
131 0x83 ƒ LATIN SMALL LETTER F WITH HOOK U+0192 0xC692
132 0x84 „ DOUBLE LOW-9 QUOTATION MARK U+201E 0xE2809E
133 0x85 … HORIZONTAL ELLIPSIS U+2026 0xE280A6
134 0x86 † DAGGER U+2020 0xE280A0
135 0x87 ‡ DOUBLE DAGGER U+2021 0xE280A1
136 0x88 � Undefined
137 0x89 ‰ PER MILLE SIGN U+2030 0xE280B0
138 0x8A � Undefined
139 0x8B ‹ SINGLE LEFT-POINTING ANGLE QUOTATION MARK U+2039 0xE280B9
140 0x8C � Undefined
141 0x8D � Undefined
142 0x8E � Undefined
143 0x8F � Undefined
144 0x90 � Undefined
145 0x91 ‘ LEFT SINGLE QUOTATION MARK U+2018 0xE28098
146 0x92 ’ RIGHT SINGLE QUOTATION MARK U+2019 0xE28099
147 0x93 “ LEFT DOUBLE QUOTATION MARK U+201C 0xE2809C
148 0x94 ” RIGHT DOUBLE QUOTATION MARK U+201D 0xE2809D
149 0x95 • BULLET U+2022 0xE280A2
150 0x96 – EN DASH U+2013 0xE28093
151 0x97 — EM DASH U+2014 0xE28094
152 0x98 � Undefined
153 0x99 ™ TRADE MARK SIGN U+2122 0xE284A2
154 0x9A � Undefined
155 0x9B › SINGLE RIGHT-POINTING ANGLE QUOTATION MARK U+203A 0xE280BA
156 0x9C � Undefined
157 0x9D � Undefined
158 0x9E � Undefined
159 0x9F � Undefined
160 0xA0   NO-BREAK SPACE U+00A0 0xC2A0
161 0xA1 ΅ GREEK DIALYTIKA TONOS U+0385 0xCE85
162 0xA2 Ά GREEK CAPITAL LETTER ALPHA WITH TONOS U+0386 0xCE86
163 0xA3 £ POUND SIGN U+00A3 0xC2A3
164 0xA4 ¤ CURRENCY SIGN U+00A4 0xC2A4
165 0xA5 ¥ YEN SIGN U+00A5 0xC2A5
166 0xA6 ¦ BROKEN BAR U+00A6 0xC2A6
167 0xA7 § SECTION SIGN U+00A7 0xC2A7
168 0xA8 ¨ DIAERESIS U+00A8 0xC2A8
169 0xA9 © COPYRIGHT SIGN U+00A9 0xC2A9
170 0xAA � Undefined
171 0xAB « LEFT-POINTING DOUBLE ANGLE QUOTATION MARK U+00AB 0xC2AB
172 0xAC ¬ NOT SIGN U+00AC 0xC2AC
173 0xAD ­ SOFT HYPHEN U+00AD 0xC2AD
174 0xAE ® REGISTERED SIGN U+00AE 0xC2AE
175 0xAF ― HORIZONTAL BAR U+2015 0xE28095
176 0xB0 ° DEGREE SIGN U+00B0 0xC2B0
177 0xB1 ± PLUS-MINUS SIGN U+00B1 0xC2B1
178 0xB2 ² SUPERSCRIPT TWO U+00B2 0xC2B2
179 0xB3 ³ SUPERSCRIPT THREE U+00B3 0xC2B3
180 0xB4 ΄ GREEK TONOS U+0384 0xCE84
181 0xB5 µ MICRO SIGN U+00B5 0xC2B5
182 0xB6 PILCROW SIGN U+00B6 0xC2B6
183 0xB7 · MIDDLE DOT U+00B7 0xC2B7
184 0xB8 Έ GREEK CAPITAL LETTER EPSILON WITH TONOS U+0388 0xCE88
185 0xB9 Ή GREEK CAPITAL LETTER ETA WITH TONOS U+0389 0xCE89
186 0xBA Ί GREEK CAPITAL LETTER IOTA WITH TONOS U+038A 0xCE8A
187 0xBB » RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK U+00BB 0xC2BB
188 0xBC Ό GREEK CAPITAL LETTER OMICRON WITH TONOS U+038C 0xCE8C
189 0xBD ½ VULGAR FRACTION ONE HALF U+00BD 0xC2BD
190 0xBE Ύ GREEK CAPITAL LETTER UPSILON WITH TONOS U+038E 0xCE8E
191 0xBF Ώ GREEK CAPITAL LETTER OMEGA WITH TONOS U+038F 0xCE8F
192 0xC0 ΐ GREEK SMALL LETTER IOTA WITH DIALYTIKA AND TONOS U+0390 0xCE90
193 0xC1 Α GREEK CAPITAL LETTER ALPHA U+0391 0xCE91
194 0xC2 Β GREEK CAPITAL LETTER BETA U+0392 0xCE92
195 0xC3 Γ GREEK CAPITAL LETTER GAMMA U+0393 0xCE93
196 0xC4 Δ GREEK CAPITAL LETTER DELTA U+0394 0xCE94
197 0xC5 Ε GREEK CAPITAL LETTER EPSILON U+0395 0xCE95
198 0xC6 Ζ GREEK CAPITAL LETTER ZETA U+0396 0xCE96
199 0xC7 Η GREEK CAPITAL LETTER ETA U+0397 0xCE97
200 0xC8 Θ GREEK CAPITAL LETTER THETA U+0398 0xCE98
201 0xC9 Ι GREEK CAPITAL LETTER IOTA U+0399 0xCE99
202 0xCA Κ GREEK CAPITAL LETTER KAPPA U+039A 0xCE9A
203 0xCB Λ GREEK CAPITAL LETTER LAMDA U+039B 0xCE9B
204 0xCC Μ GREEK CAPITAL LETTER MU U+039C 0xCE9C
205 0xCD Ν GREEK CAPITAL LETTER NU U+039D 0xCE9D
206 0xCE Ξ GREEK CAPITAL LETTER XI U+039E 0xCE9E
207 0xCF Ο GREEK CAPITAL LETTER OMICRON U+039F 0xCE9F
208 0xD0 Π GREEK CAPITAL LETTER PI U+03A0 0xCEA0
209 0xD1 Ρ GREEK CAPITAL LETTER RHO U+03A1 0xCEA1
210 0xD2 � Undefined
211 0xD3 Σ GREEK CAPITAL LETTER SIGMA U+03A3 0xCEA3
212 0xD4 Τ GREEK CAPITAL LETTER TAU U+03A4 0xCEA4
213 0xD5 Υ GREEK CAPITAL LETTER UPSILON U+03A5 0xCEA5
214 0xD6 Φ GREEK CAPITAL LETTER PHI U+03A6 0xCEA6
215 0xD7 Χ GREEK CAPITAL LETTER CHI U+03A7 0xCEA7
216 0xD8 Ψ GREEK CAPITAL LETTER PSI U+03A8 0xCEA8
217 0xD9 Ω GREEK CAPITAL LETTER OMEGA U+03A9 0xCEA9
218 0xDA Ϊ GREEK CAPITAL LETTER IOTA WITH DIALYTIKA U+03AA 0xCEAA
219 0xDB Ϋ GREEK CAPITAL LETTER UPSILON WITH DIALYTIKA U+03AB 0xCEAB
220 0xDC ά GREEK SMALL LETTER ALPHA WITH TONOS U+03AC 0xCEAC
221 0xDD έ GREEK SMALL LETTER EPSILON WITH TONOS U+03AD 0xCEAD
222 0xDE ή GREEK SMALL LETTER ETA WITH TONOS U+03AE 0xCEAE
223 0xDF ί GREEK SMALL LETTER IOTA WITH TONOS U+03AF 0xCEAF
224 0xE0 ΰ GREEK SMALL LETTER UPSILON WITH DIALYTIKA AND TONOS U+03B0 0xCEB0
225 0xE1 α GREEK SMALL LETTER ALPHA U+03B1 0xCEB1
226 0xE2 β GREEK SMALL LETTER BETA U+03B2 0xCEB2
227 0xE3 γ GREEK SMALL LETTER GAMMA U+03B3 0xCEB3
228 0xE4 δ GREEK SMALL LETTER DELTA U+03B4 0xCEB4
229 0xE5 ε GREEK SMALL LETTER EPSILON U+03B5 0xCEB5
230 0xE6 ζ GREEK SMALL LETTER ZETA U+03B6 0xCEB6
231 0xE7 η GREEK SMALL LETTER ETA U+03B7 0xCEB7
232 0xE8 θ GREEK SMALL LETTER THETA U+03B8 0xCEB8
233 0xE9 ι GREEK SMALL LETTER IOTA U+03B9 0xCEB9
234 0xEA κ GREEK SMALL LETTER KAPPA U+03BA 0xCEBA
235 0xEB λ GREEK SMALL LETTER LAMDA U+03BB 0xCEBB
236 0xEC μ GREEK SMALL LETTER MU U+03BC 0xCEBC
237 0xED ν GREEK SMALL LETTER NU U+03BD 0xCEBD
238 0xEE ξ GREEK SMALL LETTER XI U+03BE 0xCEBE
239 0xEF ο GREEK SMALL LETTER OMICRON U+03BF 0xCEBF
240 0xF0 π GREEK SMALL LETTER PI U+03C0 0xCF80
241 0xF1 ρ GREEK SMALL LETTER RHO U+03C1 0xCF81
242 0xF2 ς GREEK SMALL LETTER FINAL SIGMA U+03C2 0xCF82
243 0xF3 σ GREEK SMALL LETTER SIGMA U+03C3 0xCF83
244 0xF4 τ GREEK SMALL LETTER TAU U+03C4 0xCF84
245 0xF5 υ GREEK SMALL LETTER UPSILON U+03C5 0xCF85
246 0xF6 φ GREEK SMALL LETTER PHI U+03C6 0xCF86
247 0xF7 χ GREEK SMALL LETTER CHI U+03C7 0xCF87
248 0xF8 ψ GREEK SMALL LETTER PSI U+03C8 0xCF88
249 0xF9 ω GREEK SMALL LETTER OMEGA U+03C9 0xCF89
250 0xFA ϊ GREEK SMALL LETTER IOTA WITH DIALYTIKA U+03CA 0xCF8A
251 0xFB ϋ GREEK SMALL LETTER UPSILON WITH DIALYTIKA U+03CB 0xCF8B
252 0xFC ό GREEK SMALL LETTER OMICRON WITH TONOS U+03CC 0xCF8C
253 0xFD ύ GREEK SMALL LETTER UPSILON WITH TONOS U+03CD 0xCF8D
254 0xFE ώ GREEK SMALL LETTER OMEGA WITH TONOS U+03CE 0xCF8E
255 0xFF � Undefined

Other codepage categories

DOS ISO WINDOWS