Agent described overhead marker or Kullo not blur the notes or bullet points. The adhesive surface is long enough and if a marker is not sitting right the first time, so he can come off very well and readjust without leaving Klebespruren. When opening the book on the marker, these do not solve from. Furthermore, the markers are transparent so that the text among the markers is still legible without any problems. The sheet-like paper are the markers better stability and not to break a reason.