In Place Element Structure > Array Split / Replace Subarrays
In LV2020 the split parameter was named "split length":
In LV2023Q3 the name is now showing as "diagonal":
No idea what that is supposed to mean! I presume it is a bug.
Note that the official help page is consistent with the name "diagonal", although it also refers to "split length":
(I presume the help page is auto-generated)
I haven't checked any intermediate versions.