I have found an interesting question in our Support Knowledge Base,
How can I add a comment in a Condition box or in a Script?
See below how you can achieve that:
Comments in Condition boxes (Conditions in Triggers, Transitions, etc.)
Use == to start and close your comment.
Example:
Comments in Scripts
For one line comments use // to start the comment.
For several lines of comments use /* to start the comment and */ to close it.
Example for both:
