Using MLModern with R Markdown and Quarto Sample R Markdown and Quarto PDF documents that demonstrate the MLModern typeface. Specimen R Markdown (pdflatex) [Rmd] [PDF] R Markdown (xelatex) [Rmd] [PDF] Quarto (pdflatex) [Qmd] [PDF] Quarto (xelatex) [Qmd] [PDF] Know issues Math font when rendered with XeLaTeX.