Labels:text | screenshot | font | rectangle | number OCR: The Line of Change is what causes one hexagram to change into another hexagram. Hexagram Hexagram 63 37 654321 6 5 4 3 2 In the above illustration hexagram number 63 is changing 18 to hexagram number 37. The 'Line of Change' in this case is Line number 6 in hexagram number 63. A Line of change always changes into its opposite. After Line 6 changes it transforms the entire hexagram. That is why its called the 'Line of Change'. 1