Thanks for your reply!
I don't have a program yet - I'm still considering whether to program my experiment on DirectRT and Hebrew compatibility is a serious consideration. Anyway, this message is not supposed to be part of the program (as far as I understand) - It's an example for a default message generated by the program when you ask participants for an open-ended response.
I wasn't planning to embed my session in a MediaLab session, as it is my experience that it is often simpler to use only DirectRT.
Are you saying that if I embed my session in a MediaLab session and change MediaLab's default messages, it will affect the messages shown during the DirectRT session? Is this the only way to do it?
So far, I've tried changing MediaLab's default message file (substitute.txt.)without embedding my session in a MediaLab session, and it didn't make any difference for the messages shown by DirectRT.