/usr/lib/erlang/erts-6.2/info is in erlang-doc 1:17.3-dfsg-4+deb8u2.
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It is a symlink to /usr/lib/erlang/erts-6.2/../../../share/doc/erlang-doc/erts-6.2/info
/usr/lib/erlang/erts-6.2/../../../share/doc/erlang-doc/erts-6.2/info