diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerDotCake.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerDotCake.java
index 065a5f8..d48c547 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerDotCake.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/FourCornerDotCake.java
@@ -119,23 +119,27 @@ public enum FourCornerDotCake {
 	
 	__RESERVED_PIE_SYMBOLS(1 + FC_PIE9C_27.getStop(), 1024 - 1 - FC_PIE9C_27.getStop()),
 	
+	// =========== Allow end-dark mode
+	
+	// All child letter symbols are above, an adult computer language does use ZERO
+	// cake point above this LINE of IBM1616 or lower cake points.
+	
+	// TODO: move ESC_NETHER to struct(todo) block, as escape codes should not be used real code.
+	
 	// =========== Allow end-user select rendering of data gram packet per context
 	
 	/// Interim Byte Mode, embed raw Hex 8 bit Data
+	/// Allow HEX to be displayed in Greek/Korean/Inuktitut/etc symbols. 
 	FC_IBM1616_H8(1024, 256),
 	/// Reserved for future data grams use
 	__RESERVED_DATAGRAMS(1280, 1445-1280),
-
-	//FC_XXX0130_T2(1280, 30),
-	//FC_XXX0127_T1(1310, 27),
 	
-	//FC_XXX0116_S0(1337, 16), // Leave out, just the duel hex from FC_IBM1616_H8
-	//FC_XXX0115_SF(1353, 15),
-	//FC_XXX0114_SE(1368, 14),
-	//FC_XXX0113_SD(1382, 13),
-	//FC_XXX0112_SC(1395, 12),
-	//FC_XXX0111_SB(1407, 11), // don't needs above 9, only 27 maybe...
+	// See: https://www.ibm.com/docs/en/db2/11.5?topic=uce-code-page-coded-character-set-identifier-ccsid-numbers-unicode-graphic-data
+	// TODO: Add FC_UWU0101 (unique white unicode) = Locale white space defined by word-set.
 	
+	// TODO: Remove CDC white space and newline !!!
+	
+	//FC_XXX0127_9C(todo, 27),
 	//FC_XXX0109_S9(1418, 9),
 	//FC_XXX0107_S7(1427, 7),
 	//FC_XXX0106_S6(1434, 6),
diff --git a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zion7/FourCornerZionStenoLexer.java b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zion7/FourCornerZionStenoLexer.java
index fd8b4a3..402499e 100644
--- a/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zion7/FourCornerZionStenoLexer.java
+++ b/nx01-x4o-o2o/src/main/java/org/x4o/o2o/fc18/zion7/FourCornerZionStenoLexer.java
@@ -338,15 +338,17 @@ public class FourCornerZionStenoLexer {
 					errorUnusedBigIndian = true;
 					continue;
 				}
-				int codePointL = cakePoint - FourCornerDotCake.FC_UNI2K_11.getStart();
-				int codePoint = (codePoint22 << 11) + codePointL;
+				int codePoint11 = cakePoint - FourCornerDotCake.FC_UNI2K_11.getStart();
+				int codePoint = (codePoint22 << 11) + codePoint11;
 				result.add(codePoint);
 				errorUnusedBigIndian = false;
 			}
 			if (errorUnusedBigIndian) {
 				smokeSignals.burnUNI21UnusedBigIndian(currLine, currCol);
 			}
-			handler.strobeUnicode(result);
+			if (!result.isEmpty()) {
+				handler.strobeUnicode(result);
+			}
 		}
 	}