>Every file is a binary file :)
>Like someone else stated ASCII uses the low order 7 bits of a byte to represent a symbol (i.e. character). There are some hex values that are not valid in ASCII. Use the character map application that ships with Windows to see the hex values for each symbol.
>I suggest downloading a Hex Editor (I reccomend HackMan: http://www.technologismiki.com/en/index-h.html It is free. IT people usually ask why that app is installed though because of the name). Using a Hex Editor you can investigate the file byte for byte.

There's a Hex Editor that's been shipping with VFP for several versions now. It's in the Tools folder.