  == Clarity, phrasing, etc ==  I did some work to make the phrasing more clear, but didn't have time to address the entire article.  I've also notived some redundancy in the Operations section; much of what appears in the last two paragraphs has already been said earlier in that section.  Also, though I tried to keep my revisions in International English, I'm more familiar with American English; someone may want to glance at my work to attend to any errors I made.   