\twocolwidtha{5cm}
\begin{twocollist}\itemsep=0pt
-
+\twocolitem{\windowstyle{wxNB\_TOP}}{Place tabs on the top side.}
\twocolitem{\windowstyle{wxNB\_LEFT}}{Place tabs on the left side.}
\twocolitem{\windowstyle{wxNB\_RIGHT}}{Place tabs on the right side.}
\twocolitem{\windowstyle{wxNB\_BOTTOM}}{Place tabs under instead of above the notebook pages.}
\twocolitem{\windowstyle{wxNB\_FIXEDWIDTH}}{(Windows only) All tabs will have same width.}
\twocolitem{\windowstyle{wxNB\_MULTILINE}}{(Windows only) There can be several rows of tabs.}
\twocolitem{\windowstyle{wxNB\_NOPAGETHEME}}{(Windows only) Display a solid colour on notebook pages, and not a gradient, which can reduce performance.}
+\twocolitem{\windowstyle{wxNB\_FLAT}}{(Windows CE only) Show tabs in a flat style.}
\end{twocollist}