org: Links in ODT export
12.9.5 Links in ODT export
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ODT exporter creates native cross-references for internal links. It
creates Internet-style links for all other links.
A link with no description and destined to a regular (un-itemized)
outline heading is replaced with a cross-reference and section number of
the heading.
A ‘\ref{label}’-style reference to an image, table etc. is replaced
with a cross-reference and sequence number of the labeled entity. 
Labels and captions in ODT export.
Info Catalog
org: Applying custom styles
org: OpenDocument Text export
org: Tables in ODT export