Predefined Fields

Predefined Fields are fields that can be added to the conversion with data that does not appear in the actual document, for example page number, author's name, or file name.
You can add predefined fields to your conversion via the Predefined Fields dialog, accessible from the Convert ribbon.
Once you've added a predefined field, since it isn't an actual part of the document, you will not be able to see it in the Document pane, but only in the Preview pane. There you can do anything to them that you would be able to do to a regular field.

The available predefined fields are:

File Fields
File Name The full path to the filename from which the data is converted.
Creation Time The time in which the file was created, retrieved from the file system.
Modification Time The time in which the file was modified, retrieved from the file system.
Conversion Fields
Page The number of the page the data is converted from. Most useful if not used as a Once Field, but rather as a field that is changed per page or row.
Conversion Page The number of page in the current conversion; for example, if the user converts pages 2-4 and 7, this field will contain 1 through 4. Most useful if not used as a Once Field, but rather as a field that is changed per page or row .
Conversion Time The time in which the conversion took place.
Internal Fields
These fields are always available, although if they aren't defined in the document then they will appear empty.
Some documents may contain additional fields, which will also be available when adding predefined fields for that specific document.
Creator The document creator (usually the application that created it).
Producer The document producer (usually the driver that created it).
Title The document title (as opposed to the filename which the user can change in the file system).
Subject The document's subject, as set by the author.
Keywords Keywords to which the document is related.
Author The document's original author.
Comment Any comment the author set.
Description A short description of the document.
Copyright The document's copyright.