If you use a Run Script action, you can use the command Watch.log to have a custom message inserted in the log file, so this could be used to make those markers. Syntax is:

Watch.Log Message(string), ErrorType(integer)

The message is a string that will be your message. The ErrorType is a number that will determine the color which will be used for the message if you look at it in the service console. Possible values:

1: Red
2: Orange
3: Black
4: Grey

Example for a vbscript command:

Watch.Log "This is a custom error message.", 1

When the Run Script is run, "This is a custom error message." will appear in the log, and in the service console, it will appear in red.

Hope that helps!

Raphaël Lalonde Lefebvre