hello:) In Typeset & View (PDF) i don't understand that : # Set up TeX compiler, fallback to xelatex if document indicates it if grep -Esq '\\usepackage{.*(xunicode|fontspec)|program=xelatex' "$M" then DEF_TEX=xelatex else DEF_TEX=pdflatex What is the exact syntax to use XeLaTeX ? Thanks Greetings Alain