Added TWIN, DO_EXACT and DO_CURVEFF to SIMU block.
Added TWIN, DO_EXACT and DO_CURVEFF to SIMU block.

SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack,SixTrack/SixTrack