Typing "Array" in the MS editor gives about 7 items in the dropdown including ArrayDel. However, ArrayDel has no Help entry, so pressing F1 takes us to this website.
The Search tab then yields this result:
"No documents found for: 'ArrayDel'"
After doing some digging, I found DelArray.
Maybe we could have a stub for ArrayDel that says, "Please see DelArray," or something. Thanks!