Is there any way to suppress those "Underfull \hbox (badness 10000)" warnings when using texi2pdf?
@tex \global\hbadness=10000 @end tex (It just suppresses the warnings, does not affect typesetting.) texinfo.tex already sets \hbadness considerably higher than the default. If a normal paragraph line has a badness of 10000, that's extremely spacey. But I understand preferring to live with it rather than rewrite text, or otherwise worry about it. By the way, you can get rid of the black boxes with the Texinfo command: @finalout The lines will still be reported as overfull, but the black boxes will not be printed. Independently, you can turn off the overfull reports, as in: @tex \global\hfuzz=4pt @end tex Then only lines that are more than 4pt overfull (which would normally be quite visible) would get reported. Hope this helps, Karl P.S. Gavin: FWIW, I think \letterpaper should set \hfuzz=1pt, since \afourpaper and others do. I also see no reason for \afivepaper to use \hfuzz=1.2pt when everything else uses 1pt. Perhaps best: make \hfuzz=1pt the default outside of any paper size, and remove all the paper-size-specific settings.