vimtex synctex: \lv.
skim synctex: to display the TeX source line corresponding to a point in the PDF document, hold down the Shift and Apple key and click on a point in the PDF document.
vimtex synctex: \lv.
skim synctex: to display the TeX source line corresponding to a point in the PDF document, hold down the Shift and Apple key and click on a point in the PDF document.