# Tag Info

2

You should avoid explicit \fontfamily instructions as long as possible. You're better declaring a sans serif font and then use \sffamily; for slanted type, add \slshape. If you use Helvetica for titles, you should use it in every case a sans serif font is requested in the document. \documentclass{book} \usepackage{helvet} \usepackage{titlesec} ...

1

\usepackage{titlesec} \titleformat{\chapter} {\normalfont\fontfamily{phv}\fontsize{16}{19}\bfseries}{\thechapter}{1em}{} \titleformat{\section} {\normalfont\fontfamily{phv}\fontsize{12}{17}\bfseries}{\thesection}{1em}{} \titleformat{\subsection} ...

2

Here is a working example with fixes, and I have made one suggestion: create a \newcommand by which you may define the style of tone values (C, D, etc)...I chose sans serif, but you can make it anything you like. That way, you may put them in text or math mode and they will appear as desired...as well as distinguishable from text and math variables. ...

7

If you examine the .log, you'll see the following: ! Missing \$ inserted. <inserted text> \$ l.25 if we start our octave at C, or N_ 0=C, I've inserted a begin-math/end-math symbol since I think you left one out. Proceed, with fingers crossed. What that tells you is that TeX thinks (rightly in this ...

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