Open intervals for temporalCoverage ?

Hello

Is it allowed to have values for temporalCoverage that have an open end ?
i.e. only a start date, but no end date, or only an end date and no start
date ? My understanding of the ISO 8601 format is that this is not allowed,
but I would like to confirm.

We need to be able to express a temporal coverage as an open interval in
the description of Legislation (
https://github.com/schemaorg/schemaorg/issues/1156), and though we could
reuse that property, but we can do it only if it allows open intervals
(legislation currently applicable or in force would have a start date, but
no end date).

Thanks
Thomas

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*Thomas Francart* -* SPARNA*
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