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<section>
<title>Erlang Distribution Without Large Node Container Support</title>
<p>
Communication over the Erlang distribution without support for large
<seeguide marker="erts:erl_dist_protocol#DFLAG_V4_NC">node container
data types (version 4)</seeguide> is as of OTP 24 deprecated and is
scheduled for removal in OTP 26. That is, as of OTP 26, support for
large node container data types will become mandatory.
</p>
</section>
<section>
<title>Old Link Protocol</title>
<p>
The old link protocol used when communicating over the Erlang
distribution is as of OTP 24 deprecated and support for it is
scheduled for removal in OTP 26. As of OTP 26, the
<seeguide marker="erts:erl_dist_protocol#new_link_protocol">new
link protocol</seeguide> will become mandatory. That is, Erlang nodes
will then refuse to connect to nodes not implementing the new
link protocol. If you implement the Erlang distribution yourself, you
are, however, encouraged to implement the new link protocol as soon as
possible since the old protocol can cause links to enter an
inconsistent state.
</p>
</section>
<section>
<title>?NO_APP macro</title>
<p>
The ?NO_APP macro in the edoc include file <c>edoc_doclet.hrl</c> has
been deprecated.
</p>
</section>
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