initialize

In a written or published work, an initial or drop cap is a letter at the beginning of a word, a chapter, or a paragraph that is larger than the rest of the text. The word is derived from the Latin initialis, which means standing at the beginning. An initial is often several lines in height and in older books or manuscripts, sometimes ornately decorated.
In illuminated manuscripts, initials with images inside them, such as those illustrated here, are known as historiated initials. They were an invention of the Insular art of the British Isles in the eighth century. Initials containing, typically, plant-form spirals with small figures of animals or humans that do not represent a specific person or scene are known as "inhabited" initials. Certain important initials, such as the Beatus initial or "B" of Beatus vir... at the opening of Psalm 1 at the start of a vulgate Latin psalter, could occupy a whole page of a manuscript.
These specific initials, in an illuminated manuscript, also were called initiums.

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