void CharData_Init(CharData *storage);
-void CharData_AppendString(CharData *storage, const char *s);
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void CharData_AppendXMLChars(CharData *storage, const XML_Char *s, int len);
-int CharData_CheckString(CharData *storage, const char *s);
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int CharData_CheckXMLChars(CharData *storage, const XML_Char *s);