At the very first position of a table with no block before it, Enter
inserts a paragraph above the table and moves the caret there, as both
word processors do — previously the caret could never get before such
a table. Generic first-child check, so it also covers a table leading
a cell, text box or columns section.
The anchor is an inline atom, the note text a block in the one noteSection
at the document end; a sync plugin keeps notes in anchor order, renumbers
them per class and drops the ones whose anchor is gone. Numbering, indent,
size and separator defaults are LibreOffice's, read out of a document it
saved. Endnotes still render in flow at the document end — lifting a
footnote to the foot of its page is the next step.
Steffen Becker