I can't figure out the difference between view (cmd+R) and update (cmd+shift+R) pdf. Searched everywhere, thanks.
View generates the PDF, and opens it. If the PDF is already open a new instance of the PDF reader will be created -- this is at least what happens in Windows and (if I remember correctly) Linux. Use this if you haven't got the PDF open already. Update generates the PDF, but it does not open the PDF reader. Use this if the PDF is already open.