One more suggestion to improve the documentation. It lacks installations actions, something like in auto_explain:
To use pg_overexplain, simply load it into the server. You can load it into an individual session: LOAD 'pg_overexplain'; (You must be superuser to do that.) Another way is to preload it into some or all sessions by including pg_overexplain in session_preload_libraries or shared_preload_libraries in postgresql.conf. -- Pavel Luzanov Postgres Professional:https://postgrespro.com
