????? *.xlsx ?? *.xls ??? ????? ???? ?????? ?????? ??????? ??????????, ???? ?????? ????? ?- Microsoft Excel, ?????? ?????? ???????? ???????? ?????? ?????? Microsoft Office. Xlsx ??? ????? ????? ????? ?????? ???? ??????? ????? ?? Excel ??? Excel 2007. Xls ???? ???? Excel4.0/5.0/95/97. ????? .xlsx ????? ????? ?? ??????? ????? XML ???? ????. Xls ??? ????? ?????? ????? ????? ???? ????. ?????? ?????? ?????? ??????? ?????.
PDF, ???? ????? ?? Portable Document Format, ??? ????? ???? ????? ?? ??? Adobe Systems ?????? ???? ?-90. ??? ????? ???? ?? ?????? ???-?????? ???????, ????? ????? ??????? ?????? ????? ??????, ??? ??? ??????, ?????? ?? ?????? ?????? ??????? ?? ?? ????? ??? ?? ?????. ??? ???? ?????? ????????, ????? ????, ?????, ??????? ?????????????, ?????, ????? ??????, ?????? ?????????, ??????, ????? ?????, ????? ??????.
????? ???????? ???? ????? ?? Office Excel 4.0,5.0/95/97/2007/Vorlage/Template/Open XML ?????? xls/xlsx/xlc/xlm/xlw/xlk ?- PDF ????? ?????.
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