In calligraphy, what is the purpose of using overlays?

Using overlays in calligraphy primarily allows for the application of designs or lettering on transparent surfaces. This technique can enhance the visibility of the writing and offers a unique aesthetic appeal when combined with various materials or backgrounds. Overlays can also be useful for practicing certain styles of lettering, as the underlying surface serves as a guide without permanently altering it.

While overlays can indeed contribute to texture and dimension in certain designs, the specific purpose of facilitating writing on transparent surfaces is the most defining characteristic of their use in calligraphy. By understanding this context, students can appreciate how overlays function as a versatile tool in enhancing their calligraphic work.