Add a button to the TinyMCE editor toolbar to make it easy for users to add footnotes with the proper syntax for the Simple Footnotes plugin.
The above screenshot shows the button icon with hover style in the editor toolbar. It’s in the bottom row (i.e. the “Kitchen Sink”), second to the end.
The overlay box where the user enters the text content of the footnote (it accepts HTML).
The footnote shortcode created by the plugin.