The online editor, see sentence below.
“No put-downs akin to ‘It won’t work’ or ‘That idea is dumb.’”
Hi David. Thanks. What's the previous sentence to this? As a human I find it difficult to understand this sentence fragment without the previous sentence. For me, a comma after the No is a valid suggestion, depending on the previous sentence. e.g. Did he use a put-down like "this is bad?". No, put-downs akin ...
In this sense a comma after No would be correct.