diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash17.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash17.java
index edb2e34..648a225 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash17.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash17.java
@@ -37,10 +37,10 @@ import org.x4o.fc18.cake2.zero33.FCDotCDC1604DashP6;
  */
 public enum FCDotPIE9CDash17 implements FourCornerDotCollePie9 {
 	
-	NXX_01(' '),
-	NXX_02(' '),
-	NXX_03(' '),
-	NXX_04(' '),
+	NXX_01('‾'), // from APL
+	NXX_02('¨'), // from APL
+	NXX_03('⌶'), // from APL
+	NXX_04('¬'), // from APL
 	NXX_05(' '),
 	NXX_06(' '),
 	NXX_07(' '),
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 1abadf1..d815161 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
@@ -81,7 +81,7 @@ public enum FCDotAPL0127DashP7B implements FourCornerDotColleZero33 {
 	/// SL500000
 	__DOWN_CARET(' '),
 	/// NEW: This comes from ALGOL_60 chars.
-	ALGOL_NOT('¬'),
+	__ALGOL_NOT(' '),
 	/// SL170000
 	__UP_CARET_TILDE(' '), // NAND
 	/// SL180000
@@ -92,11 +92,11 @@ public enum FCDotAPL0127DashP7B implements FourCornerDotColleZero33 {
 	/// === Left over from modern APL for Zilog Z8000 see https://aplwiki.com/wiki/Dyalog_APL
 	
 	/// SL240000
-	IBEAM_TACK('⌶'),
+	__IBEAM_TACK(' '),
 	/// NEW from DYNA
 	__DOTTED_TILDE(' '),
 	/// SL450000
-	DIAERESIS('¨'),
+	__DIAERESIS(' '),
 	// SL870000
 	__EPSILON_UNDERBAR(' '),
 	// SL860000 = Iota Underbar
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 115596a..9d7e2d4 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
@@ -51,7 +51,7 @@ public enum FCDotAPL0127DashP7C implements FourCornerDotColleZero33 {
 	/// SL210000
 	__UP_SHOE_NULL(' '),
 	/// SL630000
-	OVERBAR('‾'),
+	__OVERBAR(' '),
 	/// SL710000
 	__ALPHA(' '),
 	/// SL750000