Assume, Upper/Lower text is being used. Should it be WILCO or Wilco or WilCo or what? Generally, an acronym is all Upper case: NASA DOD YMMV, BTW, AFAIK, etc. But in some cases Upper/Lower is used: SCotUS And some have morphed with time: RADAR has become Radar or radar So, what is wilco??? Puzzled, -John =====================