System parameters (in SURVO.APU) for Survo windows and fonts: window=18,0,0 / in Windows XP (and possibly 2000,NT) gives the font size (here 18) and the position (here 0,0) of the main window of the Survo editor. According to the Windows convention, the position coordinates refer to the top-left corner of the window. edit_font=8,12,0,0 / in Windows 9X gives the font size (here 8x12) and the position (here 0,0) of the main window of the Survo editor. help_font=8,12,0,400 / in Windows 9X gives the size and position of the HELP window in a similar way. os_font=8,12,0,420 / in Windows 9X gives the properties of the window of OS commands in a similar way. In Windows XP,2000,NT font sizes and locations of these windows are changed most easily by soft buttons SYSTEM -> WINDOW. Properties of Survo graphics windows are controlled by the GPLOT /LAYOUT command (See GLAYOUT?).