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 The upper-case 'J' sits on the baseline. 
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 The centre vertex of the upper-case 'M' is above the baseline. 
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 The lower-case 'g' is single-storey (with or without loop). 
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 The upper-case 'J' has a bar to the left. 
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 The tail of the upper-case 'Q' is straight (horizontal, diagonal, or vertical). 
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 The upper-case letter 'I' has serifs/bars. 
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 The lower-case 'i' has a left-facing upper serif. 
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 The tail of the lower-case 'j' is curved with an upper serif. 
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 The lower-case 'r' has a slanted spur. 
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Note that the fonts in the icons shown above represent general examples, not necessarily the two fonts chosen for comparison.
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 The upper-case 'J' descends below the baseline. 
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 The centre vertex of the upper-case 'M' is on the baseline. 
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 The lower-case 'g' is double-storey (with or without gap). 
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 The upper-case 'J' has no bar. 
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 The tail of the upper-case 'Q' is curved, S-shaped, or Z-shaped. 
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 The upper-case letter 'I' is plain. 
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 The lower-case 'i' has no serifs or tail. 
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 The tail of the lower-case 'j' is curved with no upper serif. 
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 The lower-case 'r' has a vertical spur. 
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