 						}
 						{
 							element: "#map-highlight"
-							intro: "Another polygon"
+							intro: "This outline does't match a building at all, but rather the <strong>space between buildings</strong>."
+							position: "top"
+						}
+						{
+							element: "#no-button"
+							intro: "Press NO to tag it."
+							position: "top"
+						}
+						{
+							element: "#map-highlight"
+							intro: "Sometimes the computer is just a little bit off (e.g. here it missed a skylight). Your input can help us to train it to recognize these in the future."
 							position: "top"
 						}
 						{

						}
						{
							element: "#buttons .wrapper"
							intro: "Along with 3 buttons:<br />YES: (keyboard 3) for when the outline matches a building footprint<br />FIX: (keyboard 2) for when the outline mostly matches, but needs correcting<br />NO: (keyboard 1) for when the outline is not around a building"
							position: "top"
						}
						{

						}
						{
							element: "#map-highlight"
							intro: "But don't let perfect be the enemy of good."
							position: "top"
						}
						{
							element: "#yes-button"
							intro: "Press YES continue to the next one."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Some buildings have multiple parts. When in doubt, refer to the original map. <strong>Broken lines mean connected structures.</strong> Solid lines mean separate ones."
							position: "top"
						}
						{
							element: "#fix-button"
							intro: "Press FIX."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Same goes for <strong>multi-colored buildings</strong>. Again, defer to those original lines (broken vs. solid)."
							position: "top"
						}
						{
							element: "#yes-button"
							intro: "Press YES continue to the next one."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Good!<br />This one is actually <strong>two separate</strong> buildings."
							position: "top"
						}
						{
							element: "#fix-button"
							intro: "Press FIX."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Easy, right?<br />Occasionally a <strong>crease or seam in the map</strong> throws off the computer."
							position: "top"
						}
						{
							element: "#fix-button"
							intro: "Press FIX."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Sometimes the computer makes a mess."
							position: "top"
						}
						{
							element: "#no-button"
							intro: "Press NO."
							position: "top"
						}
						{
							element: "#map-highlight"
							intro: "Laugh at the poor computer and move on."
							position: "top"
						}
						{
							element: "#no-button"
							intro: "Press NO."
							position: "top"
						}
						{
							element: "#links-service"
							intro: "<strong>Now you're ready to begin checking buildings!</strong><br />You can always refer to this tutorial again by hitting the HELP button.<br />Have fun! And thanks for helping The New York Public Library."
							position: "left"
						}
				]
			).onchange (e) ->
