To copy an option, right-click on the option and then click on the copy icon (two overlapping squares) on the context menu, as shown in figure 1.

Figure 1. the context menu

Copied options are remembered by your web browser, so you can copy an option from one page and add it to another.

When adding options, copied options are shown on the Clipboard tab, as shown in figure 2.

Figure 2. the clipboard tab in the options window