Thread:Project:Support desk/Trouble with splist

Main page of my project contains about 20 subpages and about 300 sub-subpages. I used SubPageList3 splist and it displayed 13 elements instead of 20. When I set kidsonly option to no, it displayed me 200 elements. Why did it displayed not all subpages in kidsonly=yes mode? (Sorry for my bad English)