What is the thread count option used for within Tools - Options - Advanced tab? (4316975)

What is the thread count option used for within Tools - Options - Advanced tab?

Thread count refers to searches in all modules and the following process operations in the Service Security Module:

1. Security-> Logon account->Set password->check “also change all related service logon account passwords” and click "OK"
2. Properties->change some properties and click "OK"
3. Start service
4. Stop service
5. Pause service
6. Restart service
7. Delete service

Note: Thread count value can be a number from 1 to 100.