I compile everything correctly. It is shown a document as I wanted it. But then, on the bottom of the page, it is written: errors: 0, warnings: 0, bad boxes: 31. What are those Bad Boxes?? That appearance hits my nerve because of a word bad, and I see nothing bad in my document, it compiled correctly, what can be bad?? Are bad boxes something I should worry about?? Is it possible to somehow reduce their number or even to erase them?? Please, help.