is from the Greek iota. It first appeared looking more like a Z in the Semitic and Greek alphabets, with the Greek form gradually straightening until the Romans flattened it out. The modern miniscule i acquired its dot when blackletter script had to refine the difference between two sequential I's, which they first did by putting a short line over the two Is. After awhile those started looking too much like Us and so the practice became a habit of dotting every i. In early Christian texts I was the only letter to be written smaller, and above the baseline of other letters. This may have helped along the use of ascenders and decenders.  
  manual alphabet, sign language alphabet, I INLINE:     A letter in which the inner portions of the main strokes have been carved away, leaving the edges more less intact. Inline faces lighten the color while preserving the shapes and proportions of the original face. Outline letters, on the other hand, are produced by drawing a line around the outsides of the letters and removing the entire original form. Outline letters, in consequence, are fatter than the originals and have less definition. Casteller, Smaragd and Romulus Open are examples of inline faces.  


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