Overlay icons

Overlay icons are small icons drawn over an existing icon.

Windows uses overlay icons to notify the user that some item has a special function or attribute.

Standard overlay icons are:

	A small arrow:	Shortcut icons have a small arrow in the lower-left corner.
	A small hand:	Indicates a shared folder.
	A small blue arrow (downward-pointing):	Files to be written to CD.
	A pair of blue swirling arrows:	Offline folders.
	A small black clock:	The file has been archived.