Graphics preferences menu

• "View output table"/"View diagram" menu items
• "Preferences" menu item
• "Refresh and zoom" menu item
• "Zoom info" menu item
• "Legend font selection" menu item
• "Mini-CAD toolbar" menu item
• "Toolbar preferences" menu item
• "Pen colour and width" menu item
• "Font size selection" menu item
• "Save graphics preferences" menu item
• "Load graphics preferences" menu item