how do you comment in mysql workbench

1mysql> SELECT 1+1;     # This comment continues to the end of line
2mysql> SELECT 1+1;     -- This comment continues to the end of line
3mysql> SELECT 1 /* this is an in-line comment */ + 1;
4mysql> SELECT 1+
5/*
6this is a
7multiple-line comment
8*/
91;

1#this is a comment
2-- this is a comment but requires a whitespace/tab/newline after the double -