The program show code page setted in your machine. Just that 8)
There is more than one code page in your system. Check HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Nls\CodePage
I have 138, obtained with TCC (ex 4DOS):
10000 (MAC - Roman)
10001 (MAC - Japanese)
10002 (MAC - Traditional Chinese Big5)
10003 (MAC - Korean)
10004 (MAC - Arabic)
10005 (MAC - Hebrew)
10006 (MAC - Greek I)
10007 (MAC - Cyrillic)
10008 (MAC - Simplified Chinese GB 2312)
10010 (MAC - Romania)
10017 (MAC - Ukraine)
10021 (MAC - Thai)
10029 (MAC - Latin II)
10079 (MAC - Icelandic)
10081 (MAC - Turkish)
10082 (MAC - Croatia)
1026 (IBM EBCDIC - Turkish (Latin-5))
1047 (IBM EBCDIC - Latin-1/Open System)
1140 (IBM EBCDIC - U.S./Canada (37 + Euro))
1141 (IBM EBCDIC - Germany (20273 + Euro))
1142 (IBM EBCDIC - Denmark/Norway (20277 + Euro))
1143 (IBM EBCDIC - Finland/Sweden (20278 + Euro))
1144 (IBM EBCDIC - Italy (20280 + Euro))
1145 (IBM EBCDIC - Latin America/Spain (20284 + Euro))
1146 (IBM EBCDIC - United Kingdom (20285 + Euro))
1148 (IBM EBCDIC - International (500 + Euro))
1149 (IBM EBCDIC - Icelandic (20871 + Euro))
1250 (ANSI - Central Europe)
1251 (ANSI - Cyrillic)
1252 (ANSI - Latin I)
1253 (ANSI - Greek)
1254 (ANSI - Turkish)
1255 (ANSI - Hebrew)
1256 (ANSI - Arabic)
1257 (ANSI - Baltic)
1258 (ANSI/OEM - Viet Nam)
1361 (Korean - Johab)
20000 (CNS - Taiwan)
20001 (TCA - Taiwan)
20002 (Eten - Taiwan)
20003 (IBM5550 - Taiwan)
20004 (TeleText - Taiwan)
20005 (Wang - Taiwan)
20105 (IA5 IRV International Alphabet No.5)
20106 (IA5 German)
20107 (IA5 Swedish)
20108 (IA5 Norwegian)
20127 (US-ASCII)
20261 (T.61)
20269 (ISO 6937 Non-Spacing Accent)
20273 (IBM EBCDIC - Germany)
20277 (IBM EBCDIC - Denmark/Norway)
20278 (IBM EBCDIC - Finland/Sweden)
20280 (IBM EBCDIC - Italy)
20284 (IBM EBCDIC - Latin America/Spain)
20285 (IBM EBCDIC - United Kingdom)
20290 (IBM EBCDIC - Japanese Katakana Extended)
20297 (IBM EBCDIC - France)
20420 (IBM EBCDIC - Arabic)
20423 (IBM EBCDIC - Greek)
20424 (IBM EBCDIC - Hebrew)
20833 (IBM EBCDIC - Korean Extended)
20838 (IBM EBCDIC - Thai)
20866 (Russian - KOI8)
20871 (IBM EBCDIC - Icelandic)
20880 (IBM EBCDIC - Cyrillic (Russian))
20905 (IBM EBCDIC - Turkish)
20924 (IBM EBCDIC - Latin-1/Open System (1047 + Euro))
20932 (JIS X 0208-1990 & 0212-1990)
20936 (Simplified Chinese GB2312)
21025 (IBM EBCDIC - Cyrillic (Serbian, Bulgarian))
21027 (Ext Alpha Lowercase)
21866 (Ukrainian - KOI8-U)
28591 (ISO 8859-1 Latin I)
28592 (ISO 8859-2 Central Europe)
28593 (ISO 8859-3 Latin 3)
28594 (ISO 8859-4 Baltic)
28595 (ISO 8859-5 Cyrillic)
28596 (ISO 8859-6 Arabic)
28597 (ISO 8859-7 Greek)
28598 (ISO 8859-8 Hebrew: Visual Ordering)
28599 (ISO 8859-9 Latin 5)
28603 (ISO 8859-13 Latin 7)
28605 (ISO 8859-15 Latin 9)
37 (IBM EBCDIC - U.S./Canada)
38598 (ISO 8859-8 Hebrew: Logical Ordering)
437 (OEM - United States)
500 (IBM EBCDIC - International)
50220 (ISO-2022 Japanese with no halfwidth Katakana)
50221 (ISO-2022 Japanese with halfwidth Katakana)
50222 (ISO-2022 Japanese JIS X 0201-1989)
50225 (ISO-2022 Korean)
50227 (ISO-2022 Simplified Chinese)
50229 (ISO-2022 Traditional Chinese)
51949 (EUC-Korean)
52936 (HZ-GB2312 Simplified Chinese)
54936 (GB18030 Simplified Chinese)
55000 (SMS GSM 7bit)
55001 (SMS GSM 7bit Spanish)
55002 (SMS GSM 7bit Portuguese)
55003 (SMS GSM 7bit Turkish)
55004 (SMS GSM 7bit Greek)
57002 (ISCII - Devanagari)
57003 (ISCII - Bengali)
57004 (ISCII - Tamil)
57005 (ISCII - Telugu)
57006 (ISCII - Assamese)
57007 (ISCII - Odia (Oriya))
57008 (ISCII - Kannada)
57009 (ISCII - Malayalam)
57010 (ISCII - Gujarati)
57011 (ISCII - Punjabi (Gurmukhi))
708 (Arabic - ASMO)
720 (Arabic - Transparent ASMO)
737 (OEM - Greek 437G)
775 (OEM - Baltic)
850 (OEM - Multilingual Latin I)
852 (OEM - Latin II)
855 (OEM - Cyrillic)
857 (OEM - Turkish)
858 (OEM - Multilingual Latin I + Euro)
860 (OEM - Portuguese)
861 (OEM - Icelandic)
862 (OEM - Hebrew)
863 (OEM - Canadian French)
864 (OEM - Arabic)
865 (OEM - Nordic)
866 (OEM - Russian)
869 (OEM - Modern Greek)
870 (IBM EBCDIC - Multilingual/ROECE (Latin-2))
874 (ANSI/OEM - Thai)
875 (IBM EBCDIC - Modern Greek)
932 (ANSI/OEM - Japanese Shift-JIS)
936 (ANSI/OEM - Simplified Chinese GBK)
949 (ANSI/OEM - Korean)
950 (ANSI/OEM - Traditional Chinese Big5)
65000 (UTF-7)
65001 (UTF-8)