Some of Whorld's dialogs allow multiple items to be selected at once. The interface is common to all Windows applications, but it's described here anyway.
| Single item | Left-click it. |
| Contiguous group | Left-click the first item, and then Shift+left-click the last item. Shift+left-click can also expand or trim an existing selection. |
| Non-contiguous group | Ctrl+left-click each item. To remove a item from the selection, Ctrl+left-click it again. |
| All items | Left-click any item, and press Ctrl+A. |