### Enabling and Disabling Diagnostic Mode

When enabled, Diagnostic Mode configures TQSL to route information to a log file for use in diagnosing and correcting internet connectivity problems and latent defects.

- To enable Diagnostic Mode, select the File menu's Diagnostic Mode command; a checkmark will appear to the left of the Diagnostic Mode command, and you'll be prompted to specify the name and location of the log file into which diagnostic information will be saved.

- To terminate Diagnostic Mode, select the File menu's Diagnostic Mode command; a checkmark will no longer appear to the the left of the Diagnostic Mode command.

The default name of the log file is `tqsldiag.log`. On Windows, the log file's default location is `My Documents`; on OSX and Linux, the log file's default location is specified by `$HOME`.