On Sat, 23 Dec 2017, Rich Shepard wrote:
Yes, Check TeX appears in the Introduction document. It does show up in an article-class documents (one of mine as well as the Introduction). It does not appear in book or report classes: I tried Standard, KOMA-Script, and Memoir books and Standard and KOMA-Script reports.
Scott, Now I'm thoroughly confused. The Additional document uses KOMA-Script book class and Check TeX appears on the Tools menu. Wonder why it does not appear on my document? Have you any thoughts on how I can track the source of this discrepancy? With nothing in the preamble it still does not appear on the Tools menu. Thanks, Rich