| (: Name: combiningnodeseqhc6 :) | |
| (: Description: Simple combination of node sequences involving integers and the empty sequence. Uses "union" operator:) | |
| (: insert-start :) | |
| declare variable $input-context1 external; | |
| (: insert-end :) | |
| for $h in ( | |
| () union ($input-context1//hours)) | |
| order by number($h) | |
| return $h |