Represents a field in a document.
The PDF specification makes a distinction between a field (in
terms of a named value) and the visible appearance of the field on
So not every field has a visible appearance. Those that do can
be located using the Page and
Rect properties. The value of
the field can be modified using the Value property.
Fields exist within a hierarchy. Fields have children and their
children can have children in turn. You can drill down through the
hierarchy using the Kids
Alternatively, given a fully qualified name, you can use the
XForm-level methods to obtain