[Storebror]

This setting uses a binary mask.
"1" means core 1 only.
"2" means core 2 only.
"3" means core 1 and core 2.
"4" means core 3 only and so on...

The semicolon is just a remark, meaning that the line is not in effect if the semicolon is set.
This applies to all settings in any ini file.

Best regards - Mike