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				@@ -1744,6 +1744,8 @@ var Reveal = (function(){ 
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				 		var slides = toArray( document.querySelectorAll( selector ) ), 
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				 			slidesLength = slides.length; 
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				+		var printMode = isPrintingPDF(); 
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				+ 
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				 		if( slidesLength ) { 
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				 			// Should the index loop? 
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				@@ -1770,6 +1772,17 @@ var Reveal = (function(){ 
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				 				// http://www.w3.org/html/wg/drafts/html/master/editing.html#the-hidden-attribute 
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				 				element.setAttribute( 'hidden', '' ); 
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				+				// If this element contains vertical slides 
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				+				if( element.querySelector( 'section' ) ) { 
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				+					element.classList.add( 'stack' ); 
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				+				} 
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				+ 
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				+				// If we're printing static slides, all slides are "present" 
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				+				if( printMode ) { 
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				+					element.classList.add( 'present' ); 
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				+					continue; 
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				+				} 
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				+ 
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				 				if( i < index ) { 
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				 					// Any element previous to index is given the 'past' class 
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				 					element.classList.add( reverse ? 'future' : 'past' ); 
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				@@ -1800,11 +1813,6 @@ var Reveal = (function(){ 
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				 						} 
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				 					} 
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				 				} 
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				- 
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				-				// If this element contains vertical slides 
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				-				if( element.querySelector( 'section' ) ) { 
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				-					element.classList.add( 'stack' ); 
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				-				} 
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				 			} 
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				 			// Mark the current slide as present 
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