Fig. 10From: Instant messaging with emotion-embedded vectorized handwritings on mobile devicesAutomatically positioning onto a writing line. This illustrates our writing-line-positioning mechanism. a Our focus frame is first located at the first line. b A user uses his/her two fingers to slide the focus frame to the border between the first and second lines. c After the finger leaves the screen, our focus frame automatically move to the second lineBack to article page