The `--format` parameter in Drush is used to specify the output format of the command results. It allows you to customize how the information returned by Drush commands is presented. Here's how it works:
1. **Text Format (`--format=text`)**: This is the default format for Drush commands. It displays the command output in a human-readable text format, with each item typically listed on a separate line. This format is suitable for viewing command output directly in the terminal.