Hello @mrtball,
as far as I get it on your link and in the previous link ( http://support.sas.com/documentation/cdl/en/inmsref/67213/HTML/default/viewer.htm#p0962iqmte2v4an18g... ), temporary tables are on the temporary location, which is SASWORK (WORK library), meaning, on the disk/storage. This link from above gives also hints on how to get the information you are looking for.
The link you mentioned, basically changes the behaviour, by tagging the temporary tables. If they are tagged, they will be loaded (promoted) in memory/LASR. And that is the difference. Once loaded, you can see them into LASR as regular tables.
NOTE: The temporary table _T_BE5C2602_45A0DCB8 was successfully promoted to the
LASR Analytic Server table WORK.SUM_BY_COUNTRY. You can access this table with
the TABLE statement as table EXAMPLE.sum_by_country(tag='sales').