# EI Library Reference

Version 3.5.9

The ei library is a C interface library for communication with Erlang.

Note

By default, the ei library is only guaranteed to be compatible with other Erlang/OTP components from the same release as the ei library itself. See the documentation of the ei_set_compat_rel() function on how to communicate with Erlang/OTP components from earlier releases.

erl_interface 3.5.9
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