[Àû¿ë´ë»ó: 0.74_SVN_new, DOSBox-x]

If set, allow the DOS demo or program to make the picture wavy by playing with the 'start horizontalretrace' register of the CRTC during the active picture. Some early DOS demos (Copper by Surprise!productions) need this option set for some demo effects to work. Disabled by default.