I am using Tufte book. For the table below, I want to add a line break in the first column. I want "Nr. of transactions" to be in one line and "pre-processing" on the second line. How do I force a line break in a cell?
\begin{table}[ht]
\caption{Characteristics of the datasets}
\centering
\begin{tabular}{ | m{3cm} | m{3cm}| m{3cm} | }
\hline
Characteristics & Scandinavian retail & UK-based retail \
\hline
Nr. of transactions (pre-processing) & cell5 & cell6 \
\hline
Nr. of unique customers (pre-processing) & cell8 & cell9 \
\hline
Nr. of unique items (pre-processing) & cell8 & cell9 \
\hline
\end{tabular}
\label{Datachar}
\end{table}
Nr. of transactions \newline (pre-processing). – Bernard May 14 '22 at 13:22\usepackage{array}in the preamble. You should have presented a minimal working example. – gigiair May 14 '22 at 14:03makecell– Alan Xiang May 14 '22 at 16:54