diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash12.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash12.java
index 8e4a346..4d8806f 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash12.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash12.java
@@ -37,18 +37,18 @@ import org.x4o.fc18.cake2.zero33.FCDotCDC1604DashP6;
  */
 public enum FCDotPIE9DDash12 implements FourCornerDotCollePie9 {
 	
-	NXX_01(' '),
-	NXX_02(' '),
-	NXX_03(' '),
-	NXX_04(' '),
-	NXX_05(' '),
-	NXX_06(' '),
-	NXX_07(' '),
-	NXX_08(' '),
-	NXX_09(' '),
-	NXX_10(' '),
-	NXX_11(' '),
-	NXX_12(' '),
+	NXX_01('≠'), // ≠ from APL
+	NXX_02('≡'), // ≡ from APL
+	NXX_03('≢'), // ≢ from APL
+	NXX_04('≣'),
+	NXX_05('≤'), // ≤ from APL
+	NXX_06('≥'), // ≥ from APL
+	NXX_07('≰'),
+	NXX_08('≱'),
+	NXX_09('≮'),
+	NXX_10('≯'),
+	NXX_11('≍'),
+	NXX_12('≭'),
 	;
 	private final List<Integer> codePointDisplay;
 	
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
index b013f13..6a9a155 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9d/FCDotPIE9DDash21.java
@@ -37,27 +37,27 @@ import org.x4o.fc18.cake2.zero33.FCDotCDC1604DashP6;
  */
 public enum FCDotPIE9DDash21 implements FourCornerDotCollePie9 {
 	
-	NXX_01(' '),
-	NXX_02(' '),
-	NXX_03(' '),
-	NXX_04(' '),
-	NXX_05(' '),
-	NXX_06(' '),
-	NXX_07(' '),
-	NXX_08(' '),
-	NXX_09(' '),
-	NXX_10(' '),
-	NXX_11(' '),
-	NXX_12(' '),
-	NXX_13(' '),
-	NXX_14(' '),
-	NXX_15(' '),
-	NXX_16(' '),
-	NXX_17(' '),
-	NXX_18(' '),
-	NXX_19(' '),
-	NXX_20(' '),
-	NXX_21(' '),
+	NXX_01('⊲'),
+	NXX_02('⊳'),
+	NXX_03('⋪'),
+	NXX_04('⋫'),
+	NXX_05('⊴'),
+	NXX_06('⊵'),
+	NXX_07('⋬'),
+	NXX_08('⋭'),
+	NXX_09('∆'), // from APL
+	NXX_10('∇'), // from APL
+	NXX_11('⍋'), // from APL
+	NXX_12('⍒'), // from APL
+	NXX_13('∧'), // from APL
+	NXX_14('∨'), // from APL
+	NXX_15('⊼'),
+	NXX_16('⊻'),
+	NXX_17('⍲'), // from APL
+	NXX_18('⍱'), // from APL
+	NXX_19('⍙'), // from APL
+	NXX_20('⍫'),  // from APL
+	NXX_21('⍝'), // from APL
 	;
 	private final List<Integer> codePointDisplay;
 	
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7A.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7A.java
index 7d71a1d..089777e 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7A.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7A.java
@@ -56,21 +56,21 @@ public enum FCDotAPL0127DashP7A implements FourCornerDotColleZero33 {
 	// === 8 directions T arrows
 	
 	/// SL610000
-	__UP_ARROW('?'),
+	__UP_ARROW(' '),
 	/// SL600000
-	__RIGHT_ARROW('?'),
+	__RIGHT_ARROW(' '),
 	/// SL620000
-	__DOWN_ARROW('?'),
+	__DOWN_ARROW(' '),
 	/// SL590000
-	__LEFT_ARROW('?'),
+	__LEFT_ARROW(' '),
 	/// SL220000
-	__UP_TACK('?'),
+	__UP_TACK(' '),
 	/// SL350000
-	__RIGHT_TACK('?'),
+	__RIGHT_TACK(' '),
 	/// SL230000
-	__DOWN_TACK('?'),
+	__DOWN_TACK(' '),
 	/// SL340000
-	__LEFT_TACK('?'),
+	__LEFT_TACK(' '),
 	
 	// === 8 mirrors
 	
@@ -87,21 +87,21 @@ public enum FCDotAPL0127DashP7A implements FourCornerDotColleZero33 {
 	/// SL020000
 	DOWN_STILE('⌊'),
 	/// SL030000 (used in GNU GPL)
-	DEL('∇'),
+	__DEL(' '),
 	/// SL060000 (used in GNU GPL)
-	DELTA('∆'),
+	__DELTA(' '),
 	
 	
 	// === 8 Oooohhhs
 	
 	/// SL110000
-	__CIRCLE_STAR('?'),
+	__CIRCLE_STAR(' '),
 	/// SL090000
-	__CIRCLE_STILE('?'),
+	__CIRCLE_STILE(' '),
 	/// SL120000
-	__CIRCLE_BAR('?'),
+	__CIRCLE_BAR(' '),
 	/// SL100000
-	__CIRCLE_SLOPE('?'),
+	__CIRCLE_SLOPE(' '),
 	
 	
 	;
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
index 8f5b6a0..863f66f 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7B.java
@@ -49,45 +49,45 @@ public enum FCDotAPL0127DashP7B implements FourCornerDotColleZero33 {
 	// SL790000 = Plus = FCDotCDC1604DashP6._PLUS
 	// SL690000 = Bar = FCDotCDC1604DashP6._MINUS
 	/// SL550000
-	__TIMES('?'),
+	__TIMES(' '),
 	// SL760000 = Slash = FCDotCDC1604DashP6.BAR_V_RIGHT
 	/// SL540000
-	__DIVIDE('?'),
+	__DIVIDE(' '),
 	
 	// === ALGOL_60 <relational operator> ::= <, ≤, =, ≥, >, ≠ 
 	
 	// SL520000 = Less than = FCDotCDC1604DashP6.TAG_COMPARE_LEFT
 	/// SL560000
-	NOT_GREATER('≤'),
+	__NOT_GREATER(' '),
 	// SL810000 = Equal = FCDotCDC1604DashP6._EQUALS
 	/// SL570000
-	NOT_LESS('≥'),
+	__NOT_LESS(' '),
 	// SL530000 = Greater than = FCDotCDC1604DashP6.TAG_COMPARE_RIGHT
 	/// SL820000
-	NOT_EQUAL('≠'),
+	__NOT_EQUAL(' '),
 	/// SL050000
-	DEL_STILE('⍒'), // grade down
+	__DEL_STILE(' '), // grade down
 	/// SL070000
-	DELTA_STILE('⍋'),
+	__DELTA_STILE(' '),
 	
 	// === ALGOL_60 <logical operator> ::= ≡ | ⊃ | ∧ | ∨ | ¬
 	
 	/// SL300000
-	EQUALS_UNDERBAR('≡'),
+	__EQUALS_UNDERBAR(' '),
 	/// SL430000
-	__RIGHT_SHOE('?'),
+	__RIGHT_SHOE(' '),
 	/// SL510000
-	UP_CARET('∧'),
+	__UP_CARET(' '),
 	/// SL500000
-	DOWN_CARET('∨'),
+	__DOWN_CARET(' '),
 	/// NEW: This comes from ALGOL_60 chars.
 	ALGOL_NOT('¬'),
 	/// SL170000
-	UP_CARET_TILDE('⍲'), // NAND
+	__UP_CARET_TILDE(' '), // NAND
 	/// SL180000
-	DOWN_CARET_TILDE('⍱'),
+	__DOWN_CARET_TILDE(' '),
 	/// NEW: from Dynalog_APL
-	EQUALS_UNDERNOT('≢'),
+	__EQUALS_UNDERNOT(' '),
 	
 	/// === Left over from modern APL for Zilog Z8000 see https://aplwiki.com/wiki/Dyalog_APL
 	
@@ -98,11 +98,11 @@ public enum FCDotAPL0127DashP7B implements FourCornerDotColleZero33 {
 	/// SL450000
 	DIAERESIS('¨'),
 	// SL870000
-	__EPSILON_UNDERBAR('?'),
+	__EPSILON_UNDERBAR(' '),
 	// SL860000 = Iota Underbar
-	__IOTA_UNDERBAR('?'),
+	__IOTA_UNDERBAR(' '),
 	/// SL730000
-	__IOTA('?'),
+	__IOTA(' '),
 	/// SL410000
 	DOWN_SHOE('∪'),
 	/// SL400000
diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7C.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7C.java
index 76b8e19..4b06719 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7C.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/zero33/FCDotAPL0127DashP7C.java
@@ -36,30 +36,30 @@ import org.x4o.fc18.cake2.zero33.dec1.FCDotINC0801DashP8;
 public enum FCDotAPL0127DashP7C implements FourCornerDotColleZero33 {
 	
 	/// SL720000
-	__EPSILON('?'),
+	__EPSILON(' '),
 	/// NEW from dynslog APL
-	__LEFT_SHOE_UNDERBAR('?'),
+	__LEFT_SHOE_UNDERBAR(' '),
 	/// SL420000
-	__LEFT_SHOE('?'),
+	__LEFT_SHOE(' '),
 	/// SL740000
-	__RHO('?'),
+	__RHO(' '),
 	/// NEW from dynlog APL
 	MINUS_COMMA('⍪'),
 	
 	/// --------- Left over from IBM APL
 	
 	/// SL210000
-	UP_SHOE_NULL('⍝'),
+	__UP_SHOE_NULL(' '),
 	/// SL630000
 	OVERBAR('‾'),
 	/// SL710000
-	__ALPHA('?'),
+	__ALPHA(' '),
 	/// SL750000
-	__OMEGA('?'),
+	__OMEGA(' '),
 	
 
 	/// SL040000
-	DEL_TILDE('⍫'), /// === ⎕LOCK
+	__DEL_TILDE(' '), /// === ⎕LOCK
 	/// SL130000
 	QUAD_QUOTE('⍞'), // GNU APL: stdin and debug out
 	/// SL270000
@@ -69,23 +69,23 @@ public enum FCDotAPL0127DashP7C implements FourCornerDotColleZero33 {
 	/// SL320000
 	DIAERESIS_DOT('∵'), // each item
 	// SL330000
-	DELTA_UNDERBAR('⍙'), // GNU APL: user var: starts (A-Z) or one of the 3 characters _, ∆ , or ⍙
+	__DELTA_UNDERBAR(' '), // GNU APL: user var: starts (A-Z) or one of the 3 characters _, ∆ , or ⍙
 	/// SL370000
 	LESS_GREATER('⋄'), // each stmt
 	/// SL480000
-	__CIRCLE_PLUS('?'), // group
+	__CIRCLE_PLUS(' '), // group
 	/// SL490000
-	__CIRCLE_TIMES('?'), // index of
+	__CIRCLE_TIMES(' '), // index of
 
-	OPEN_19('?'),
-	OPEN_20('?'),
-	OPEN_21('?'),
-	OPEN_22('?'),
-	OPEN_23('?'),
-	OPEN_24('?'),
-	OPEN_25('?'),
-	OPEN_26('?'),
-	OPEN_27('?'),
+	OPEN_19(' '),
+	OPEN_20(' '),
+	OPEN_21(' '),
+	OPEN_22(' '),
+	OPEN_23(' '),
+	OPEN_24(' '),
+	OPEN_25(' '),
+	OPEN_26(' '),
+	OPEN_27(' '),