The target attribute specifies where to open the linked document. The "_blank" value opens the linked document in a new browser window, or in a new tab, leaving the original webpage alone. This is helpful because people won't lose the original webpage, as they click away, going off on some tangent. Your webpage is gonna still be there, hiding in the background.
Target values are used considerably by frames, which we haven't learned about yet. I will relocate this stuff when I get to those lessons, so ignore this...
_self : Opens the linked document in the same frame as it was clicked (this is default).
_parent : Opens the linked document in the parent frame.
_top : Opens the linked document in the full body of the window. If your webpage is locked in a frame, you can use this to break out of the frame.
framename : Opens the linked document in a named frame.
