Set Dimension Text Size

Newbie/Hobbiest Question:  How do I set the text size for Notes, SimpleNotes, and Dimensions?  Format -> Dimensions -> Text -> Text Settings will not let me set the "Height" to less than one, nor can I set Text Height to less than one under Options -> Drafting Styles -> Text.  I find that the measurements displayed to be too 'heavy' and large relative to the dimensions. I would like to reduce the text size overall throughout the drawing.

Thank you for your time!