Core: What is the purpose of obs comment?

Application Name: Core Version Number: 1.3.x till 2.0.x

Question: What is the purpose of obs’s comment member?

We are working on a Visit Documents UI module whose aim is to provide a 2.x UI to save, view & manipulate complex obs (in particular patient images). So far I was using the complex obs’s comment member to hold a caption that goes alongside the complex obs. I would rather avoid using an obs group, but I may reconsider depending on your answers.

@shruthidipali, I found an old thread from 07/14 between @darius and you where you asked a similar question for similar reasons, what is your take on this in the end?