\item[copy and paste] called secondary (or clipboard) selection. Some more modern programs use Ctrl-C/Ctrl-X and Ctrl-V for this (some use other keys or qualifiers, like Shift).
\end{description}
-\subsection*{How it works:}%
+\subsection*{How Copy/Paste works:}%
\label{sub:how_it_works}
All of the methods use window \textit{properties} to attach data, called a selection, to a source window. The program advertises the selection by using the X server. The window property used determines which selection type is set/advertised by the new selection.