Clicking gains +1% of your CpS

I have this upgrade in Cookie Clicker, but I have no idea what "Clicking gains +1% of your CpS" means. Can anyone provide any info? Once I buy it, clicking doesn't seem to make any difference.

What impact does "+1% of your CpS" give?


Clicking doesn't increase your CpS if that's what you're thinking; it means that if every time you manually clicked it would give you 20 cookies, and your CPS was 100, clicking now gives you 21 cookies. This scales up as your CpS increases. So if you buy another building and get 200CpS, your clicks now generate 22 cookies each.