${P5SITE}/Parallel/
${P5SITE}/Parallel/Prefork/
${P5SITE}/Parallel/Prefork.pm
${P5SITE}/Parallel/Prefork/SpareWorkers/
${P5SITE}/Parallel/Prefork/SpareWorkers.pm
${P5SITE}/Parallel/Prefork/SpareWorkers/Scoreboard.pm
@man man/man3p/Parallel::Prefork.3p
@man man/man3p/Parallel::Prefork::SpareWorkers.3p