Notes
You can open the notes pane with Alt-N. To add a note to a line, select the line and type in your note. When you are done press Enter. Afterwards you can color your note with the color picker on the left side of the textbox when you select your note.
The idea here is to mark the lines that are perhaps problematic - so they are either an error, or a misconfiguration on the user's part.
What you want is to get to the bottom of the problem - and as always, the more eyes, the better!
A common scenario would be - the customer support looks at the log. They might find some problems, and then, pass their findings to the team leader. Team leader looks at the comments, may add some of his own, then he can pass it to his team. Everyone on his team can comment (notes) on the log, and then they share their notes. Notes are automatically merged. You just drag someone's notes over LogWizard, and they are imported. It's that easy!