Latha, there is not if you're talking about Tableau Server.
Ben, only if the user has Tableau Desktop can they do what you're suggesting.
See folks, this is why we need you to specify the product and version you're talking about.
Fair point - I assumed Desktop was on the table as an option here. Obviously they are referring to Server in this specific use case (I assume at least due to mention of the comment box). However, Toby is right if you are using Server.