execuse me

   Sorry to ask you such a broad question .Would you help me another one?

   I find that in the scan.l there is a regular expression
I know that this expression is used for matching a BroString.But what does it mean?Does it mean there should not be a '\n' or '\' in the string?I try "liao\nliao" and "lsjf\ljf",but they run just ok.
   Thank you!