Hello, everyone. I need help for my first code. I write this code for extracting one sentence from text file. The code is ----------------------------------------------------------------------------------------------------------------------- import System import System.Random main = do myHeader <- readFile "C:\\Documents and Settings\\myHeader.txt" putStrLn $ myExtractSentence myHeader myExtractSentence file = ary !! ranNoInt where ranNoInt =<< ranNo -- *mark ranNo = randomRIO (0, n-1) n = length ary ary = lines file ---------------------------------------------------------------------------------------------------------------------- There are two questions. 1) I've got following error message. Haskell>ghc --make Test01.hs -o Test [1 of 1] Compiling Main ( Test01.hs, Test01.o ) Test01.hs:10:9: parse error (possibly incorrect indentation) How can fix it? 2) Is it OK at "*mark" line? Thank you. S. CHANG