APPNOTE.TXT actually has a comment about it: > D.1 The ZIP format has historically supported only the original IBM PC character encoding set, commonly referred

APPNOTE.TXT actually has a comment about it: > D.1 The ZIP format has historically supported only the original IBM PC character encoding set, commonly referred to as IBM Code Page 437. This limits storing file name characters to only those within the original MS-DOS range of values and does not properly support file names in other character encoding, or languages. Extra fields are generally used to implement other code pages. There is a direct way to do it with an extension to the GPBF. Problem is that some writers don't implement the proper flags.