The Selection Summary is a function which adds a summary or a log of choices made by the user throughout the document.
To add a summary to your document, place your cursor where the summary should be, click 'New' -> 'Other' -> 'Selection Summary', as visualized below.
The summary contains every choice possible to make in the document, for example, whether or not the choice is visible or hidden, if the 'Show/Hide' function is used, or if the 'Multiple Choice' function is used, which choice has been selected in the document.
When the user finalizes the document the summary will disappear and the choices executed.
Remove Selected Summary
In order to remove the summary, click on the label attached to the summary field, and use the 'Remove' button next to the 'New' button, as visualized below.