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???You can set a reference scale for your data frame, which fixes the size for symbols and text to draw at the desired height and width at the referenced map scale. This is like freezing the symbol and text sizes used in your data frame. One reason to set a reference scale is if you want the detail in your data frame to look the same on-screen as when you print it. It's useful to see the map's symbols on screen at the size they will appear in the printed copy.???
???You can set a reference scale for your data frame, which fixes the size for symbols and text to draw at the desired height and width at the referenced map scale. This is like freezing the symbol and text sizes used in your data frame. One reason to set a reference scale is if you want the detail in your data frame to look the same on-screen as when you print it. It's useful to see the map's symbols on screen at the size they will appear in the printed copy.???