Reply To: number lines with bold arrow in the middle Home › Forums › Nemeth Code for Math and Science › number lines with bold arrow in the middle › Reply To: number lines with bold arrow in the middle July 3, 2013 at 12:54 pm #21619 togilbyParticipant I've encountered the same situation; an arrowhead indicating the end of the bold segment within the boundaries of the number line.Hooray for the askers and the experts at Ask An Expert!Thank you, Julie and Lindy