--- a/docs/Writerside/topics/about.md	Sat Dec 06 17:51:08 2025 +0100
+++ b/docs/Writerside/topics/about.md	Sat Dec 06 18:01:52 2025 +0100
@@ -32,6 +32,7 @@
 * changes cxBufferReserve() to allow reducing the capacity
 * changes the members of CxJson and CxJsonValue
 * changes the return value of cxJsonObjIter() to CxMapIterator
+* changes CxTree structure so that it now inherits CX_COLLECTION_BASE
 * removes the sort_members feature from CxJsonWriter
 * fixes cxJsonWrite() incorrectly returning non-zero when strings needed to be escaped
 * fixes critical memory leak when using cxMapFree() on a kv-list that is using destructors