From: "Data _null_;" on
The options are ascending, descending and undefined. I want them
returned in the order I put them in, similar to ORDER=DATA.

ordered: 'option'
Specifies whether or how the data is returned in key-value order if
you use the hash object with a hash iterator object or if you use the
hash object OUTPUT method.

option can be one of the following values:

'ascending' | 'a' Data is returned in ascending key-value order.
Specifying 'ascending' is the same as specifying 'yes'.

'descending' | 'd' Data is returned in descending key-value order.

'YES' | 'Y' Data is returned in ascending key-value order. Specifying
'yes' is the same as specifying 'ascending'.

'NO' | 'N' Data is returned in some undefined order.