I am having great difficulty with this one. Despite having read all the comments here, I cannot decide whether the rotation of an across answer will have the same effect as an east-west flip of it. The same applies rotation and north-south flips. Rotation could mean that the whole word is rotated (i.e. entered in reverse order), or the letters are entered in their correct order but rotated by 90 degrees, which is what happens in the relevant misprint.