3.1.1.19 Add Page ................................................................................... 85
3.1.1.20 Next Page .................................................................................. 85
3.1.1.21 Shortcuts ................................................................................... 85
3.1.2 Concise Mode ....................................................................................... 85
3.1.3 Desktop Mode ....................................................................................... 86
3.2 Subject Mode Function ............................................................................ 87
3.2.1 English Mode ......................................................................................... 88
3.2.2 Math Mode ........................................................................................... 91
3.2.3 Physics Mode ........................................................................................ 94
