--- a/docs/Writerside/topics/about.md	Sat Nov 22 19:16:27 2025 +0100
+++ b/docs/Writerside/topics/about.md	Sun Nov 23 12:19:24 2025 +0100
@@ -65,6 +65,8 @@
 * changes struct cx_array_reallocator_s by replacing the four generic data members with two specifically named members
 * changes cx_array_reserve() so that it reserves exactly the requested capacity (i.e., without overallocation)
 * changes all other array functions to perform smart overallocation to avoid too many subsequent allocations
+* changes that binary search and infimum always report the largest index, and supremum always reports the smallest index
+  when the found element appears more than once in the array
 * fixes critical memory overflow in the stack-based array reallocator (this unfortunately breaks the function signature)
 * fixes critical bug in cx_array_insert_sorted() that caused an infinite loop when inserting duplicates
 * fixes mempool implementation not supporting NULL as argument for realloc