DEFINITION System; (* portable, except where noted *)
 PROCEDURE SetFont;
 PROCEDURE SetColor;
 PROCEDURE SetOffset;
 PROCEDURE Time;
 PROCEDURE Collect;
 PROCEDURE Open;
 PROCEDURE OpenLog;
 PROCEDURE Clear;
 PROCEDURE Close;
 PROCEDURE CloseTrack;
 PROCEDURE Recall;
 PROCEDURE Copy;
 PROCEDURE Grow;
 PROCEDURE Free;
 PROCEDURE ShowModules;
 PROCEDURE ShowLibraries;
 PROCEDURE FreeLibraries;
 PROCEDURE Directory;
 PROCEDURE CopyFiles;
 PROCEDURE RenameFiles;
 PROCEDURE DeleteFiles;
 PROCEDURE Watch;
 PROCEDURE State;
 PROCEDURE ShowCommands;
 PROCEDURE ShowTasks;
 PROCEDURE Trap (error, fp, pc, page: LONGINT); (* non-portable *)
 PROCEDURE Quit;
 PROCEDURE Reboot; (* non-portable *)
 PROCEDURE OpenKernelLog; (* non-portable *)
 PROCEDURE Init; (* non-portable, for internal use *)
END System.