Index: doc/papers/concurrency/examples/Format.cfa
===================================================================
--- doc/papers/concurrency/examples/Format.cfa	(revision 2e041e276e3c041daeb3e6411e2157f397c9a362)
+++ doc/papers/concurrency/examples/Format.cfa	(revision 390fb02b2df905afef08792dee99f77218c37c0c)
@@ -11,7 +11,7 @@
 		for ( g = 0; g < 5; g += 1 ) {		// groups of 5 blocks
 			for ( b = 0; b < 4; b += 1 ) {	// blocks of 4 characters
-//				do {
+				do {
 					suspend();
-//				} while ( ch == '\n' || ch == '\t' );
+				} while ( ch == '\n' || ch == '\t' );
 				sout | ch;					// print character
 			}