How archival data are consumed?

The doccument introduces how to achive temporal records.
But it does not explain how the achival data can be consumed, so I do not know what it is used for.
Any more instrctions about this feature?

You can use tctl, for example:

tctl wf listarchived -h

Or via ListArchivedExecutions api from your sdks.

And you should be able to get histories by describing it, for example:

tctl wf desc -h
tctl wf show -h

Note that for list queries, visibility query syntax for archival is limited and varies depending on the provider you use, see readmes for s3 and gcloud.