Context: Injective mappings must be provided between characters in existing legacy character sets and characters in Unicode to facilitate conversion to Unicode and allow interoperability with legacy software. Lack of consistency in various mappings between earlier Japanese encodings such as Shift-JIS or EUC-JP and Unicode led to round-trip format conversion mismatches, particularly the mapping of the character JIS X 0208 '～' (1-33, WAVE DASH), heavily used in legacy database data, to either U+FF5E ～ FULLWIDTH TILDE (in Microsoft Windows) or U+301C 〜 WAVE DASH (other vendors).

Question: What kind of mappings must be provided between characters in existing legacy character sets and those in Unicode?
Answer: Injective mappings

Question: A lack of consistency between what earlier Japanese encodings and unicode led to mismatches?
Answer: Shift-JIS or EUC-JP

Question: what is the fullwidth tilde character code in Microsoft Windows?
Answer: U+FF5E

Question: What helps to convert characters out of Unicode?
Answer: Unanswerable

Question: WAVE DASH is only found in what version of OS?
Answer: Unanswerable

Question: What is the Windows code for EUC-JP?
Answer: Unanswerable

Question: What are the names of the two forms of Unicode?
Answer: Unanswerable

Question: What does a lack of consistency prevent?
Answer: Unanswerable