error after opening a lisp file

Hi,

I have a lisp file and I am going to add some others lisps commands to this file,but after opening that ,I see these word :

 +3$!1BÆÔåŠLÝéòǦG®}Ú•6L¸Q‚%jôɳG®}ÒÖÈåºUÉýÛŸ\ÜË·Gï¬*;
"v̱LôšPÁñ€iòÇã¦4e¸S†%)6AñNÿ߇/v‰}Žz‘WŽ5 s” ~6E£nõ¬pêõË·O¾]š
4H°A¢eêõË¿WÃê´jôËôbª2 `³0B¦mø!bæ®ÞÞÓ‡-xÙ¹S†-zÔ‰3F¬yÒ…+vÌ°köÍ»WŽ=Z” 2D¡I²EªuʵK¿_ž

what should I do?

thanks

Hamid

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