Are you using the right format for the right platform? Remember, as Txortx noted, the Windows platform strings are Unicode values, and special characters need to be specifed as a 4 digit hex number, e.g "\00a9". The Mac platform strings are single-byte Mac encoded ( according to the language specified - Mac Roman is the default) , and special characters need to be specified as a two-digit hex number, e.g "\a9". We use such characters specofocations a lot, although I havem't ever tried putting in a new-line. Also, I thinl that the feature file parser is very narrow-minded, and doesn't take uppercase hex digits.