Very useful

If you’re having issues with your site, WordPress debug mode can help you find out what’s going wrong by displaying all PHP errors, notices, and warnings.

With atec-debug you can easily toggle debug mode and display the content of the debug.log file. You can also toggle other wp-config.php constants, such as WP_DEBUG_DISPLAY, WP_DEBUG_LOG, SCRIPT_DEBUG, WP_ALLOW_REPAIR & SAVEQUERIES and set the WP_MEMORY_LIMIT.

It’s an absolutely essential tool for developers.