What does the "CSV ISO 8859" export format mean?

What is the "CSV ISO 8859" export format?
When should I use the "CSV ISO 8859" export format?
The CSV ISO 8859 export format creates a CSV file using the ISO 8859 (Latin-1) character encoding. It is intended for data exchange with software solutions that require this encoding, such as certain DATEV-compatible applications and other accounting or administrative systems. Using this format helps ensure that data, especially special characters, is imported correctly and allows for seamless data exchange with compatible third-party systems.