Dear Uwe there are 3 problem in my book woth note box, after i generated pdf file, i got 3 box in page 14, 44, and 49 over the bottom margin. the book: https://sourceforge.net/projects/ohodquizgame/files/Books/Physics.pdf/download
the source code: https://sourceforge.net/projects/ohodquizgame/files/Books/ regards
