Defines starting with `v' in src/include

• VBLANK_ENDLINE_NTSC src/include/custom.h:93
• VBLANK_ENDLINE_PAL src/include/custom.h:92
• VBLANK_HZ_NTSC src/include/custom.h:97
• VBLANK_HZ_PAL src/include/custom.h:96
• VBLANK_SPRITE_NTSC src/include/custom.h:95
• VBLANK_SPRITE_PAL src/include/custom.h:94