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altmtl
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In EDR, ``$DESI_ROOT/vac/edr/lss/v2.0/altmtl`` contains the Merged Target List (MTL) ledgers ( :ref:`see, e.g., <mtl_ledger>`) with subpriorities re-seeded, but following the fiber-specific observational information on whether the target assigned to a particular positioner was successful. There are 128 realizations, each in a separate ``Univ{UNUM}`` directory, each of which is split into ``dark`` and ``bright`` programs.

.. toctree::
   :maxdepth: 1

   UnivUNUM/index