Level of further reading from 3 to 4

Please do not switch the level of further reading from level 3 to level 4 unless you have established consensus for that. Thanks.

No thanks.

Please don't. I don't want to revert war. Level 3 for Further reading is an established practice.

Yes, but I found that it makes more sense at level 4, so that's what I'm doing. Besides, "Related terms" at level 4 is also established practice.

It makes more sense at level 3 to me, so please, do not change Czech entries I just created to level 4.