You should know that calligraphers enjoy employing the ancient terms that described the craft in the musty nomenclature of yore. For instance, "lowercase" is eschewed for "minuscule," and "majuscule" is preferred over "uppercase." "Ductus" is used instead of the plain ol' "diagram of letters showing the numbered sequence of strokes." Your letters sit on the "baseline." The height of the lower-case "x" is called the "x-height." The x-heights of different alphabets can vary dramatically.

Yes, I know, it's sort of like playing medieval dress-up. Fortunately, calligraphers are pretty harmless folk, even if we do think the pen is mightier than the sword.

Oh - and some calligraphers like to be called "scribes." No, they don't wear robes.