\begin{tcolorbox}
  \footnotesize
  \texttt{\mkcomment{1ST MAKE RULE: build the directory hosting the used table.}}

  \texttt{\mkvar{a1dir} = \$(\mkvar{BDIR})/analysis-1}

  \texttt{\mktarget{\$(a1dir)}:}

  \texttt{\mktab{}\mkprog{mkdir} \$@}

  \vspace{2em}
  \texttt{\mkcomment{2ND MAKE RULE: Convert the XLSX table to a simple plain-text table.}}

  \texttt{\mkvar{mk20tab3} = \$(\mkvar{a1dir})/menke20-table-3.txt}

  \texttt{\mktarget{\$(mk20tab3)}: \$(\mkvar{indir})/menke20.xlsx | \$(\mkvar{a1dir})}

  \texttt{\recipecomment{Call XLSX I/O to convert all the spreadsheets into different CSV files.}}

  \texttt{\recipecomment{We only want the `table-3' spreadsheet, but XLSX I/O doesn't allow setting its}}

  \texttt{\recipecomment{output filename. For simplicity, let's assume its written in `table-3.csv'.}}

  \texttt{\mktab{}\mkprog{xlsxio\_xlsx2csv} \$<}

  \vspace{0.5em}
  \texttt{\recipecomment{Use GNU AWK to keep the desired columns in space-separated, fixed-width format.}}

  \texttt{\recipecomment{With `FPAT' commas within double quotes are not counted as columns.}}

  \texttt{\mktab{}\mkprog{awk} 'NR>1\{printf("\%-10d\%-10d\%-10d \%s\textbackslash{}n", \$\$2, \$\$3, \$\$(NF-1)*\$\$NF, \$\$1)\}' \textbackslash}

  \texttt{\mktab{}{ }{ }{ }{ }FPAT='([\^{},]+)|("[\^{}"]+")' table-3.csv > \$@}

  \vspace{0.5em}
  \texttt{\recipecomment{Delete the temporary CSV file.}}

  \texttt{\mktab{}\mkprog{rm} table-3.csv}

  \vspace{2em}
  \texttt{\mkcomment{3RD MAKE RULE: Main LaTeX macro file for reported values.}}

  \texttt{\mktarget{\$(mtexdir)/analysis1.tex}: \$(\mkvar{mk20tab3)}}

  \texttt{\recipecomment{Count the total number of papers in their study to report in this paper.}}

  \texttt{\mktab{}v=\$\$(\mkprog{awk} '\!/\^{}\#/\{c+=\$\$2\} END\{print c\}' \$(\mkvar{mk20tab3)})}

  \texttt{\mktab{}\mkprog{echo} "\textbackslash{}newcommand\{\textbackslash{}menkenumpapers\}\{\$\$v\}" > \$@}

  \vspace{0.5em}
  \texttt{\recipecomment{Count total number of journals in that study.}}

  \texttt{\mktab{}v=\$\$(awk 'BEGIN{FIELDWIDTHS="31 10000"} !/\^\#/\{print \$\$2\}' \$(mk20tab3) \textbackslash}

  \texttt{\mktab{ }{ }{ }{ }{ }{ }{ }{ }{ }{ }| uniq | wc -l)}

  \texttt{\mktab{}\mkprog{echo} "\textbackslash{}newcommand\{\textbackslash{}menkenumjournals\}\{\$\$v\}" >> \$@}
\end{tcolorbox}
