If it is already possible, I could not manage to do it.
Any way, would be nice to open whole application (.opa) files without having to publish it on your environment .
Sometimes we download examples or how-to's directly from Forge just to see how it was made, and we can't open it as we do with e-spaces.
Usually I rename the extension to .zip to open only the e-spaces I want to see.
Would be nice if service studio let you do it, by opening or giving the choice to open the e-spaces individually.