Rob
Forum Moderator

Try Notepad++  or something where you can show white space characters. It's the |P like symbol (View>Show Symbol in the newer version of ++). If you copied the header from the manual you're almost certainly going to have picked up a symbol or few. 

We tend to use ++ because it also shows up all the useful { } pairs and colours by command syntax once you save in a certain format, ie .c