diff -r 5732947cbcc2 -r aaf85b3e9601 docs/Writerside/topics/about.md
--- a/docs/Writerside/topics/about.md	Sun Oct 26 11:50:33 2025 +0100
+++ b/docs/Writerside/topics/about.md	Sun Oct 26 12:01:28 2025 +0100
@@ -34,8 +34,9 @@
 * adds support for integer keys to CxHashKey
 * adds support for comparing arbitrary strings without explicit call to cx_strcast()
 * adds cxListClone() and cxMapClone()
+* adds cxMapDifference() and cxMapListDifference()
+* adds cxListContains() and cxMapContains()
 * adds cxListSet()
-* adds cxListContains()
 * adds cxListFirst() and cxListLast()
 * adds cxListRemoveAndGetFirst() and cxListRemoveAndGetLast(),
   and corresponding macro aliases cxListPopFront() and cxListPop()