can a subtitle be placed under screen shot icons on desktop?

I have found that any icon placed by the system will usually start near the hard drive icon on right and then put itself wherever there is room going from top to bottom. I simply allow that and then drag them where I want. I keep a pretty bare desktop, so I name them and file them away or print and then delete them.

You can rename it - highlight it (click once), hit "enter" and the field will change. Delete and then type in a name. Hit enter again - done.

You can only change the filename, but not add a subtitle under a filename.

Open a Finder window, choose your Desktop in the Sidebar and press command-j keys. On the pop-up menu choose "Arrange by" = None and "Sort by" = None.