Hello!

I am wonderig what the ?. does in the following code:

aFile ¨Βιμε®ξεχ¨ΆτεστζιμεΆaFile.each_byte ¨Βόγθό ¨Βυτ¤Β ¨Βθ» ¨Βυτγ® ¨Β

sorry, if the question is stupid. all I found in my book about the '?'
sign was the meaning in regular expressions.

thanks
  manu