I use \href to link my pdf file in my presentation. The problem is, it change my first document slide to the linked pdf. So, i have to reopen my slide again to continue my presentation. How can I make the linked pdf document open in new pdf document? (like open a new tab/window?). So, i don't have to reopen my slide presentation. Here my commands:
\begin{proof}
\href{run:./proof 3.1.4.pdf}{proof 3.1.4.pdf}
\end{proof}