Tobar (7/19/2013)
I don't think I have ever seen any add-ons for SSMS, but maybe I was just not looking.
A lot of people I know swears by http://www.ssmstoolspack.com/[/url] by SQL Server MVP Mladen Prajdic. Whether it is actually has the feature you ask for, I don't know, but there is a lot in it.
[font="Times New Roman"]Erland Sommarskog, SQL Server MVP, www.sommarskog.se[/font]