Consider this MWE
\documentclass{article}
\def\sample{text text text text text}
\def\Sample{\sample\sample}
\parindent=0pt
\begin{document}
\Sample\\
\Sample\\[2\baselineskip]
\Sample
\bigskip
\begin{tabular}{c}
\Sample\\
\Sample\\[2\baselineskip]
\Sample
\end{tabular}
\end{document}
Which produce
As you can see \\[2\baselineskip] add vertical space of 2\baselineskip after line break outside tabular environment.
If we add \\[2\baselineskip] inside tabular there is no effect as though the length \baselineskip became 0pt, why is this happening and how to fix it ( add vertical space of 2\baselineskip inside tabular), thanks.
\addlinespacefrom thebooktabspackage. Or use a new tabular line and add a rule of zero width but fixed height:\rule{0pt}1cm}– Johannes_B Oct 23 '15 at 08:44\baselineskipis 0pt inside tables. You can use\normalbaselineskip. – cgnieder Oct 23 '15 at 08:45\baselineskipbecame 0pt" :\baselineskipis 0pt. – David Carlisle Oct 23 '15 at 08:48