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$ORACLE_HOME/rdbms/admin/utlxplp.sql

utlxplp.sql is an SQL script to display the plan table output including parallel execution processing.
With SQL*Plus it is recommended to set linesize to 130 and pagesize to 0.
The executable content of this script is quite simple: 
set markup html preformat on
select * from table(dbms_xplan.display());

See also

utlxpls.sql is a similar script, but for serial processing
The explain plan SQL statement.

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