Proofreading the PDF of a book, thesis, or report derived from a large multi-file Sweave project
I'm a big fan of reproducible research.
I often use make, Sweave, LaTeX, and R to produce large research reports (i.e., lots of `Sexpr()` commands and heaps of graphs and tables).

Obviously, `R CMD Sweave` identifies certain errors in the R code chunks at compilation.
But the resulting PDF can still contain undesirable results.
I have a few strategies for proofreading such documents, but I was interested in learning from  others on SO.

### Questions:
1. Does anyone have any tips or tricks related to proofreading and quality control when it comes to producing PDFs based on large multi-file Sweave projects?
2. What are the most common errors that you encounter in resulting PDFs?
3. How do you efficiently identify errors in the resulting PDF? 
4. How do you efficiently move between PDF and Rnw source?
Proofreading the PDF of a book, thesis, or report derived from a large multi-file Sweave project
===

I'm a big fan of reproducible research.
I often use make, Sweave, LaTeX, and R to produce large research reports (i.e., lots of `Sexpr()` commands and heaps of graphs and tables).

Obviously, `R CMD Sweave` identifies certain errors in the R code chunks at compilation.
But the resulting PDF can still contain undesirable results.
I have a few strategies for proofreading such documents, but I was interested in learning from  others on SO.

### Questions:
1. Does anyone have any tips or tricks related to proofreading and quality control when it comes to producing PDFs based on large multi-file Sweave projects?
2. What are the most common errors that you encounter in resulting PDFs?
3. How do you efficiently identify errors in the resulting PDF? 
4. How do you efficiently move between PDF and Rnw source?