h6. [[FontManager]] h6(. » [[FontManager SWI Calls|SWI Calls]] h6((. » Font_SetScaleFactor h2. Font_SetScaleFactor h5. (SWI &40090) |_<^{width:3em}. Entry | | |<^. R1|<^. X scale factor | |<^. R2|<^. Y scale factor | |_<^{width:3em}. Exit || |<^. R1 |<^. Preserved| |<^. R2 |<^. Preserved| h4. Use This call sets the values used when converting between OS co-ordinates and millipoints. h4. Notes Applications that run within the windowing environment (the desktop) should not use this call. This is because other applications may rely on current settings. If the call is used, then the current values should be restored afterwards. The default value is 400 millipoints per OS unit. To read values, [[Font_ReadScaleFactor]] should be used. h4. See also * [[Font_ConverttoOS]] * [[Font_Converttopoints]] * [[Font_ReadScaleFactor]]