The Print dialog's templates could be saved, applied and deleted, but
not moved to another library or another computer. Each saved template
now has an Export… button that writes it to a .lcprint file, and
Import… beside Save adds templates from such files.
print.template.export {name, path} writes {format, version, name,
settings}. print.template.import {path} reads at most 256 KB, checks
the format, version, name and every setting as a saved template's
settings are checked, drops cell photos and guides, and adds the
template under its name, or under "name (2)" and so on when the name is
in use. The buttons appear where the host provides open and save
dialogs: the desktop app does, and the web build does not.