Thanks for your reply. I found controlling the environment outside org is much better and stopped thinking this direction. Cheers, Zhihao On 15 November 2015 at 14:03, Grant Rettke wrote: > On Thu, Nov 5, 2015 at 7:16 PM, Zhihao Ding wrote: > > Is it a good idea to use environment variables in the links referenced > in a > > org file? e.g. > > > > [[$mydata/myfigure.pdf]] > > How do you want Org to behave when the user clicks the link? > > > If so how to achieve this? > > I would try in-line source blocks. > -- Regards, Zhihao Ding