Customize Window - Font (Matrix , Market Depth , Quick Trade Bar )
The Font tab allows you to customize the font properties for the active Matrix windows.
Access using the Settings > Window menu sequence and select the Font tab.
Font 
Displays the font that is used for the window element of the active window.
- To change the status line font, select the font name from the list.
Style
Displays the font style that is used for the window element of the active window.
- To change the font style, select the font style from the list.
Size
Displays the font size that is used for the window element of the active window.
- To change the font size, select the size from the list.
Preview
Displays a preview of the selected font, font style, and font size options selected in the Font dialog. The preview provides a viewing of what the font will look like in the active window.
Set as Default - Check this setting to save any changes that you made as your default.
Click OK to apply changes or Cancel to exit without changes.