In DTM, there is a bulls-eye icon that you can click to help you find an element tag or selector (see screen shot 1). I don't see it in Launch (see screen shot 2). Is it coming later?
Screen Shot 1 :: DTM
Screen Shot 2 :: Launch
Unfortunate answer, probably not soon, and our engineering manager is very sad about that. Our security team has concerns about that feature. I don't understand the full technical details, but conceptually, in order to make that work, we have to get the content of the page and read through it in order to grab the css selector that identifies that element you click on. That can be performed on internal company pages that have potentially sensitive information on it. Which is bad. We don't do anything nefarious with it, but just the fact that we can access it is bad. So until we can figure out another way of doing that, that feature will not find a home in Launch.
Personally, I just use Chrome's built in tools.
To use it:
Let me know if you need some screenshots.
In the meantime, you can use a number of browser add-on's or the browser's built in tools to grab a CSS selector from an element on the page. Let me know if you want additional instruction on how to do it.
Hmmmmm, that is too bad. Maybe the team that maintains the Visual Experience Composer (VEC) for Target can help address the security team's concerns. It seems like the Element Tag or Selector feature in DTM is the younger brother of the VEC feature in Target.
Thanks for always answering my questions so happily!