Selects all objects that are needed to render and print a PDF and that affect the visual appearance of the PDF.
This Action can be useful to separate visible from invisible content, or to make sure that preflight checks are only applied to visible content, as it doesn't make sense to check and fix objects that are invisible. Note that PitStop comes with a default Restricting Action List created using this Action; you can use it in conjunction with a Preflight Profile to check only the elements needed to render the file, and ignore the rest.
To determine whether or not an object is visible, you can take into account the objects on other layers, or you can limit the scope by adding another select Action.