The bass clef is one of the basic elements of music.

Reading clefs is difficult.

He is an expert in semiotics, and his theories are very profound.

Semiotics is the study of signs and symbols used in society and culture.

What does this masu symbol mean?

This text is organized using section signs.

The culture of the Nara period played a very important role in Japanese history.

During the Ice Age, the climate of the Earth changed significantly.

He survived through the Dark Ages.

This piece of art reflects the zeitgeist of its time.