When Numberfox is activated, it numbers the hyperlinks on a given page. Select the link by entering the number in the Numberfox text-box and open it by pressing return.
Activate Numberfox by pressing alt(command on a Mac) + e. Note that this key combination can be changed in the preferences screen(Tools > Numberfox).
When Numberfox is activated you can use the up/down arrow keys to cycle through all available links .Press escape to disable Numberfox and return focus to the main browser window.
Numberfox can be placed on any toolbar. Use view > toolbars > customize to move the Numberfox toolset.