Updates and corrections unrelated to JEP 423.

https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-g1-garbage-collector1.html#GUID-3A64E6D5-A49D-4D6E-97E7-1BC21419ACF7

- collection set and collection set candidate composition

- pre-evacuate collection set section in the "Garbage Collection Process" section needs care

- https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-g1-garbage-collector1.html#GUID-DA6296DD-9AAB-4955-8B5B-683651936155

Periodic collections: stress applicability to *idle*!

- https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-g1-garbage-collector1.html#GUID-D74F3CC7-CC9F-45B5-B03D-510AEEAC2DAC

The option to disable eager reclaim is called -XX:-G1EagerReclaimHumongousObjects

- https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-garbage-collector-tuning.html#GUID-8D9B2530-E370-4B8B-8ADD-A43674FC6658

Mention async logging?

- https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-garbage-collector-tuning.html#GUID-D2B6ADCE-6766-4FF8-AA9D-B7F4F3D0F469

candidate collection set vs. collection set candidates

https://docs.oracle.com/en/java/javase/21/gctuning/garbage-first-g1-garbage-collector1.html#GUID-99526C47-2C71-408C-9DBE-4F38ED839FF0

eager reclaim: collection set candidates composition; which regions have their remembered sets rebuilt and so on