typo

src/bk/ExtremalLayoutCalc.java

@@ -63,11 +63,11 @@ public class ExtremalLayoutCalc implements AlgorithmStage {
         if( type == LayoutType.TOP_BOTTOM_LEFT )
             pseudoCode = new PseudoCodeNode( "Extremal layout: leftmost upper", tree );
         if( type == LayoutType.TOP_BOTTOM_RIGHT )
-            pseudoCode = new PseudoCodeNode( "Extremal layout: rightmost upper'", tree );
+            pseudoCode = new PseudoCodeNode( "Extremal layout: rightmost upper", tree );
         if( type == LayoutType.BOTTOM_TOP_LEFT )
-            pseudoCode = new PseudoCodeNode( "Extremal layout: leftmost lower'", tree );;
+            pseudoCode = new PseudoCodeNode( "Extremal layout: leftmost lower", tree );;
         if( type == LayoutType.BOTTOM_TOP_RIGHT )
-            pseudoCode = new PseudoCodeNode( "Extremal layout: rightmost lower'", tree );
+            pseudoCode = new PseudoCodeNode( "Extremal layout: rightmost lower", tree );
         bcNode = bc.createPseudocodeTree( tree );
         cpNode = cp.createPseudocodeTree( tree );
         pseudoCode.add( bcNode );