关于 .Xy名称XyWrite 文档扩展名.xy格式文本类别文档开发者XyQuest描述A document from XyWrite (II, III, III Plus, 4 for DOS, XyWrite for Windows) or IBM Signature, IBM's own branded XyWrite 4: IBM PC text with formatting commands written between guillemets.MIME 类型text/x-xywrite维基百科维基百科上的 .xy