[VW2430H] What is M-book mode?

FP931, FP231W, FP937S, FP951, FP785, FP71E, FP92V, FP93VW, FP222W, FP241W Z, V2200, V2400 ECO, E2220HD, E2220HDP, E2420HD, G920W, G920WA, G2210W, G2210WA, V2200 ECO, EW2430, BL2201PU, BL2400PU, B2210HD, VW2220, GL2231, GL2430M, GL2440HM, G2225HD, FP73G, E910E, G2200WE, G2222HD, G2222HDAL, G2222HDL, G2420HDBL, G910WA, G920WL, G922HDAL, G922HDL, G922HDPL, T2200HD, V2220P, V2220H, V2220HP, V2320, G2025HDA, G900D, G900AD, G900HD, G900HDA, G900WD, G900WAD, T900HD, T900HDA, G610HDA, G920HD, G920HDA, V2410, G2220HDA, G2220HD, G2411HD, G2411HDA, G2410HD, G2020HD, G2020HDA, G2320HDB, G2222HDA, G2222HDH, G2420HDBE, G910W, G920WAL, V2210B, V2210 ECO, V2220, V2400, T2200HDA, E900HD, V2210, E900HDA, G2010WAP, G2400WD, G2400WAD, G700D, G700AD, G925HD, T2210HD, T2210HDA, T2210HA, G2412HD, G2320HD, G700A, G2000WA, G610HDAL, A2200, A900W, G900A, T241W, T52WA, T92WA, T261W, T91WA, T71WA, T221W, G2000WD, G2000WAD, G2010WP, E700T, E900T, G2200WT, G2400WT, T221WA, G900, G900W, G2000W, G2400W, E700, E900, E700A, FP71G+, FP71W, FP91E, G615HDPL, VW2220H, EL2200, GL2231AM, GL2430HM, EW2430V, E2420HDB, E2420HDP, V2410B, V2410 ECO, V2410T, V2420, V2420H, G925HDA, G2025HD, V2420P, V2420HP, GL930A, FP92W, FP92E, FP72E, FP73E, FP93E, FP91R, FP241W, FP72G+, FP202W V2, FP94G, GL2030, GL2030AM, BL2400PT, BL2201PT, BL2201M, BL902M, GL2440, GL2040, GL2040A, GL2040AM, GL930, GL930AM, GL940, GL940M, GL2240M, GL931, GL931A, XL2410T, GL941A, GL941M, GL941AM, GL2230AM, GL2240, GL2240A, GL2240AM, GL931M, GL931AM, GL941, GL2231A, GL2231M, GL2430, E900HDP, E2200HDP, G2420HD, G2420HDB, G922HD, G922HDA, T902HD, T902HDA, G902HD, G902HDA, G702D, G702AD, E902HDP, E900HDAP, E910, E910T, G2200W, G2200WA, G2110W, G2110WA, E2400HD, M2700HD, M2400HD, E2200HDA, E2200HD, G2010W, G2010WA, FP222W A, FP92W A, FP241VW, FP93G S, FP92E S, FP72E S, FP222W H, FP73G S, FP94VW, FP73E S, FP93E S, FP93GX+, FP991, E700N, E900A, E900N, FP241W J, T91W, T71W, FP75G, FP93G P, FP95G, FP731, FP737S, FP757, FP767-12, FP783, V920, V920P, G920WD, E900WA, E900WN, T51WA, G2400WA, G900WA, X900, X900W, V2400H, V2200H, FP92W-B, T91W-B, FP222W-B, FP75G-B, FP93G-B, FP51G+, FP93GWA, FP202W A, FP202W V3, T201W, T201WA, E900W, A2000, E2200WA, E2200W, T905A, FP91V+, FP71V+, FP93G X, FP202W, FP91GX, FP91G+, FP91V, FP93V, FP93G, FP72V+, FP92G+, FP783+, FP71G X, T905, FP71G+S, FP71E+, FP71V, FP2081, FP2092, FP91GP, G610HDPL, FP91G, FP785+, FP51G, T705, T505, FP937S+, FP737S-D, FP767, FP557, FP567S, FP591, FP557S, FP581S, FP791, FP547, FP737V, FP531, FP992, FP2091, FP71G, FP567, FP553, EW2420, VW2420, VW2420H, V2320H, GL930M, GL2030A, GL2030M, BL2201, BL902TM, GL2040M, GL940A, GL940AM, GL2230, GL2230A, GL2230M, EW2730, EW2730V, XL2420T