Instead of being defined directly with the explicit syntax a destination may
be referred to indirectly by means of a name object (PDF 1.1) or a byte
string (PDF 1.2). This capability is especially useful when the destination
is located in another PDF document.
In PDF 1.1, the correspondence between name objects and destinations shall be
defined by the Dests entry in the document catalogue (see 7.7.2, “Document Catalog”).
The value of this entry shall be a dictionary in which each key is a destination
name and the corresponding value is either an array defining the destination