Overprint all Paragraph Styles
Sets all paragraph styles to overprint
Overprint all Paragraph Styles ensures that all Paragraph Styles in the document are set to overprint.
Why would you want to do this?
Black ink applied to text or native InDesign objects is overprinted by default. This prevents misregistration of small black-type characters positioned over colour areas, or of colour areas outlined with black lines. However, if the black is applied at anything less than 100%, the default is for the type to knockout, potentially resulting in misregistration.