文書 ぶんしょクラス記述 きじゅつ じゃないです
bunshokurasukijutsubujanaidesu

Noun
Desu Copula
Negation Auxiliary

The polite negative form of 文書クラス記述部

1. It is not the document class description.; It's not the document class definition.

Negative
Polite
Casual Register
Computing