So I tried to make a table using this code:
\begin {tabular}{|l||c|p{8cm}|}
\hline
test & test2\\
\hline\hline
test3 & test4\\
\hline\hline
\end {tabular}
Between the 2 rows of thext I want to add a double line, but it splits the table in 2. How do I change this? Sorry for my bad english, I hope you guys understand it.