-extern int GetSI(int X, int Y);
-extern int GetStretchX(int si);
-extern int GetStretchY(int si);
-extern int GetX(int si);
-extern int GetY(int si);
-extern void InitGlobals();
-extern void InitPseudoCompileFlags();
-
-extern void ReadLevel();
-
-extern int getSequenceLength(int sequence);
-extern boolean isSnappingSequence(int sequence);
-
-extern boolean Alignments;
-extern boolean BlockingSpeed;
-extern boolean Cracked;
-extern boolean Ctrl_Alt_Fix;
-extern boolean Dead_Code;
-extern boolean DebugSwitch;
-extern boolean DemoRecordFix;
-extern boolean EGA_Arg;
-extern boolean EP_DEBUG;
-extern boolean EP_DEMO;
-extern boolean EP_ENHANCE;
-extern boolean EP_OLD8;
-extern boolean EXTRASPEED;
-extern boolean HP_DEMO;
-extern boolean LevelLoaded;
-extern boolean Level_Arg;
-extern boolean Level_Fix;
-extern boolean Norm_Time;
-extern boolean Original;
-extern boolean Protection;
-extern boolean Record_Fix;
-extern boolean Redundant;
-extern boolean SAVEGAME;
-extern boolean SafeRecord;
-extern boolean ScreenFix;
-extern boolean SpeedKeys;
-extern boolean TIMINGFIX;
-extern boolean Ver62;
-extern boolean Ver62test;
-extern boolean Ver63;
-extern boolean Ver64;
-extern boolean bCapturePane;
-extern byte *DisPlayField;
-extern byte *PlayField8;
-extern char *CurPath, *OrigPath, *TmpPath;
-extern currency DeltaT;