This file is indexed.

/usr/share/liblouis/tables/en_US.tbl is in liblouis-data 3.5.0-1ubuntu0.3.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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#-name: U.S. English grade 2 (EBAE)
#-display-name: U.S. English (EBAE) contracted braille

#+locale:en-US
#+type:literary
#+contraction:full
#+grade:2
#+system:ebae
#+hyphenation:yes

# TODO: Please correct the metadata above. It is not meant to be
# accurate nor complete. It hasn't been verified by the table
# author yet. It is merely an attempt by the liblouis maintainers
# to get some sensible initial values in place.

# TODO: Please add a reference to official documentation about
# the implemented braille code. Preferably submit the documents
# to https://github.com/liblouis/braille-specs.

include en-us-g2.ctb
include hyph_en_US.dic
include braille-patterns.cti