Yes, that was an interesting exercise in comma usage staged by the Spanish teacher, during a meeting with the parents of the little school in San Salvador, (I was in attendance although I had previously graduated from high school, but my sister was still there), in which on the blackboard was written the text in Spanish language the last will and testament of a certain man, lacking, however, any commas. First one student got up and inserted commas in certain places. The next student inserted commas in other places and perhaps erased previous commas, and the next student did the same and so on. Each change of commas changed who gets what from the will. Even so, there being nothing for us to get, it really did not matter to us, it was merely an academic exercise highlighting the importance of comma usage and what a difference an aptly placed comma, albeit a small thing, can make. Needless to say.