linkage_preference [ATSC Semantics]
linkage_preference is an 2-bit unsigned integer field that indicates whether or not the associated program element is
Linked to another program element in the transmission.
linkage_preference values
| linkage_preference | Meaning |
| 0 / 0x0 | not linked-- this element is not linked to any other program element in the transmission |
| 1 / 0x1 | linked_no_preference-- There is no preference between Linked program elements |
| 2 / 0x2 | linked_preferred-- this element is preferred over the Linked program element in the transmission |
| 3 / 0x3 | linked_not_preferred-- The Linked program element is preferred over this program element |
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