Books have a preferred writing style that make comprehension easy for readers who have mastered a certain level of fluency in reading a language. Books in this category are intended for readers that may comprehend new vocabulary from the context and usage. Sentence structures may be more diverse, and more difficult vocabulary is often not explained. These books should be accessible to readers without any particular expertise in the subject area, and subject-specific jargon should always be explained. Use {{reading level|intermediate}} to add a book to this category.