Entries were stored as an HTML string, where any block tag inside a <p>
closes it — so a copied text box, which holds blocks, lost its place in
the line. They now keep the slice's nodes; an entry written earlier keeps
its HTML string, which insertContent takes just as well.
LibreOffice's Tools ▸ AutoText, in the ribbon where Word keeps its Quick
Parts: store the selection under a name and a shortcut, insert it from the
library or by typing the shortcut and pressing F3 — LibreOffice's key for
it.
An entry is HTML parsed back through the schema, so it keeps its marks and
blocks; the library is app-level, as it is in both products, so no file
carries it.
Steffen Becker