+/*
+ * \brief Scroll the specified range of data down (moving lines up)
+ * \note This is NOT a visual scroll, it scrolls the data
+ *
+ * Top/Bottom `DownCount` lines are discarded (bottom if DownCount is -ve)
+ * UNLESS DownCount is -ve and RangeCount is -1 (indicating insertion of lines)
+ */
+extern void AxWin3_RichText_ScrollRange(tHWND Window, int FirstRow, int RangeCount, int DownCount);