Producer; Subject; Title; Zoom - Adobe ACROBAT FORMS JAVASCRIPT OBJECT Specification

Use this property to get or set a page of the document. When setting the pageNum to a specific
page, remember that the values are "0" based.
// This example will go to the first page of the document.
this.pageNum = 0 ;
Or pageNum can be used to advance "n" pages in the document:
// This example will advance the document to the next page
this.pageNum++;

producer

Type: String
This property contains producer of the document (e.g. "Acrobat Distiller", "PDFWriter", etc.).

subject

Type: String
This property defines the document's subject.

title

Type: String
This property specifies the document's title

zoom

Type: Integer
Use this property it to get or set the current page zoom level. The values allowed are 12% and
800% specified as an integer.
Example:
// This example will zoom in to twice the current zoom level.
this.zoom *= 2;
// This now sets the zoom to 200%
this.zoom = 200;
Acrobat Forms - JavaScript Object Specification
Access: R
Access: R/W
Access: R/W
Access: R/W
23