proxyRefreshUI mel command

As the thread title has stated, does anyone knows anything more of the command - proxyRefreshUI?

While I have located the file, it is mentioned in the script that is namely for reference editor panel…
I am asking this because as I am trying out this command, by a stroke of luck, it seems to have rectified some of the problems that I was facing with hypershade.

Thus I would like to know if the command does more than just a force refresh on the said panel…

anyone?