The spec for this action:
https://www.adobe.com/content/dam/acom/en/devnet/pdf/pdfs/PDF32000_2008.pdf#G11.2111850
An example of a form using this action:
https://www2.illinois.gov/rev/forms/reg/Documents/reg-1-mr.pdf
const ViewerPreferencesValidators = {
      HideToolbar: isBool,
      HideMenubar: isBool,
      HideWindowUI: isBool,
      FitWindow: isBool,
      CenterWindow: isBool,
      DisplayDocTitle: isBool,
      NonFullScreenPageMode: isName,
      Direction: isName,
      ViewArea: isName,
      ViewClip: isName,
      PrintArea: isName,
      PrintClip: isName,
      PrintScaling: isName,
      Duplex: isName,
      PickTrayByPDFSize: isBool,
      PrintPageRange: Array.isArray,