diff --git a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash25.java b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash25.java
index f0f0427..b223cc3 100644
--- a/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash25.java
+++ b/nx01-x4o-fc18/src/main/java/org/x4o/fc18/cake2/pie9c/FCDotPIE9CDash25.java
@@ -62,7 +62,7 @@ public enum FCDotPIE9CDash25 implements FourCornerX06BaklavaPoints, FourCornerX0
 	UBARLOW_CHI('χ', '\u0332'),
 	UBARLOW_PSI('ψ', '\u0332'),
 	UBARLOW_OMEGA('⍹', '\u0332'), // FROM APL
-	APL_REMARK('⍝', '\u0332'),
+	APL_REMARK('⍝', '\u0332'), // FROM APL, is now a underbar tombstone
 	;
 	private final int[] codePoints;