# Debugging

### Debug Mode

You can enable debug logging by opening Marked Settings, Advanced pane and checking the Debug Mode checkbox at the bottom of the pane. This will display a dropdown menu where you can set the level of logging you’d like to see:

- Errors only: Only severe errors will be logged
- Errors and Warnings: Additionally display less urgent warnings
- All: Display errors, warnings, and info-level debug messages. This is the recommended setting for troubleshooting.

### Viewing the log

With Debug Mode enabled, you can open the Help menu and select Open Debug Log. This will open Marked’s log in Console.app, which will be updated live as log messages are added while using Marked.

### Troubleshooting Custom Rules

Custom preprocessors and processors get their own log interface. Select Help Show Custom Rules Log to open the window. This window will display a colorized log showing which rules matched and what commands they run.

### Reporting an Issue

Use Help Report an Issue to open a window that shows your settings for the most common keys, and a template for creating a bug report. Use the “Copy to Clipboard” button to copy the contents of the window, and click “Open Support Site” to open the new-question form where you can paste your report. I try to respond to reports within 48 hours.

#### Next up: Additional Help ▶

Support Site | Knowledgebase