The article discusses the use and significance of em dashes in writing, highlighting their versatility in creating pauses, indicating interruptions, and enhancing the overall flow of sentences. It provides examples and tips on how to effectively incorporate em dashes into various types of writing to improve clarity and style.

The article explores unique features of PostgreSQL grammar, focusing on custom operators, precedence in compound selects, and various syntax nuances such as string continuation, quoted identifiers, and Unicode escapes. It highlights how these aspects can enhance functionality while also presenting challenges for implementation.