--- /dev/null
+#ifndef UI_H__
+#define UI_H__
+
+void ShowGui(void);
+void HideGraphWindow(void);
+void ShowGraphWindow(void);
+void RepaintGraphWindow(void);
+void PrintAndLog(char *fmt, ...);
+void SetLogFilename(char *fn);
+
+extern double CursorScaleFactor;
+extern int PlotGridX, PlotGridY;
+extern int offline;
+
+#endif