internal vim command to check file existence ?

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Hi,
Is there any commands can be used to check if a file exists ?

command `exists` seems to be function related.

I could not open this thread "Re: check if a file exists in vim script"
on mail-archive.com" in browser .. so plz help.

Many thanks !

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Best Regards,
Aaron Lewis - PGP: 0x4A6D32A0
FingerPrint EA63 26B2 6C52 72EA A4A5 EB6B BDFE 35B0 4A6D 32A0
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