An important nit to check... Besides this, LGTM, thanks!
https://codereview.appspot.com/579280043/diff/567170044/Documentation/notation/input.itely File Documentation/notation/input.itely (right): https://codereview.appspot.com/579280043/diff/567170044/Documentation/notation/input.itely#newcode464 Documentation/notation/input.itely:464: @code{αβγXII} or @code{Теноры} work. Not sure whether this works. We are using Computer Modern fonts for typesetting the PDF manuals; this font family comes with some (limited) Greek support, but it doesn't contain glyphs for Russian... Please check the resulting PDFs to be sure! https://codereview.appspot.com/579280043/
