Common codepages are 1252 (Western European), 1250 (Central European),
1251 (Cyrillic), 1253 (Greek), 1254 (Turkish), 1255 (Hebrew), 1256
(Arabic), 1257 (Baltic), 1258 (Vietnamese), 874 (Thai), 932
(Japanese), 936 (Simplified Chinese), 949 (Korean) and 950
(Traditional Chinese). R does not allow the C locale, and uses 1252
as the default codepage.