We had "Recent Questions" box on the Dashboard that show comments in the lessons with "?" mark.
But sometimes the Recent Questions box would be filled with comments containing "?" that were not actually asking questions.
So now we have "Requests for #help" box on the Dashboard! Including "#help" in your comment signals for help from other students.
Clicking "#help" adds "#help" to your comment:
And your comment appears on the "Requests for #help" box!
This video shows how to do it!