sing a higher-level language
    then these details are handled for you. In most cases you should
    consider using a procedural language before writing your event triggers
    in C. The documentation of each procedural language explains how to
    write an event trigger in that language.
   </p><p>
    Event trigger functions must use the <span class="quote">“<span class="quote">version 1</span>”</span> function
    manager interface.
   </p><p>
    When a function is called by the event trigger manag