Hello,

 

how does org-mode 'decide' whether a linked filed (C-c C-l) should be opened (C-c C-o) inside an Emacs buffer or opened by an external program? I am using Emacs 24.3 for Windows and org-mode 8.2

 

PDF files are opened in Acrobat, but JPGs are opened in a buffer (but are not properly displayed, even if I switch doc-view on); but I'd prefer to open them with my standard viewer (Irfan).

 

Thanks,

Christof