The origin of the Western writing body

1. The Roman body cannot be made up of ruler rules.
   The Roman body was originally written by a flat-head pen (perhaps only at the time), or there was no paper at that time, with a flat pen to drafting the inscriptions.

   • The flat-head pen is a bit like a brush, and the paper touches the place not a point. Since the general is the right hand grip pen, so the letter looks a bit to the right tilt.
   • When the right hand is written, it is easy to brushwork from left to right, and vice versa, and the tip of the flat brush will disperse. To avoid this, some letters like O are written in two strokes, so the upper-left and lower-right sections are thinner, which is the natural result of brushwork. The same is true of S .
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   • The thickness of the strokes is different and the natural result is written with a flat-head pen. If the left side of a is thinner than the right.
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2. Formation of lowercase letters
   Latin begins with only uppercase letters, and the initial uppercase letter is used for inscription. Later, beginning with the writing tools such as a quill, the stroke of the capital letter gradually becomes round. The Carolingian body, which is close to the modern lowercase letters, was not widely used until around 9th century.
   Similar to the brushwork of the brush, the Roman traditional of the small letter a also has a complex fluctuation, using Western writing tools, strokes of the thickness of the relationship will not be mistaken.
   
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   Reference

   Latin font

The origin of the Western writing body