Runtime configuration data that may be user specific or zettel specific

Some metadata of the runtime configuration may be overwritten in an user zettel. A subset of those may be overwritten in the zettel that is currently used. This allows to specify user specific or zettel specific behavior.

The following metadata keys are supported to provide a more specific behavior:

KeyUserZettelRemarks
footer-zettelYN
home-zettelYN
langYYMaking it user-specific could make zettel for other user less useful
lists-menu-zettelYN
show-back-linksYY
show-folge-linksYY
show-sequel-linksYY
show-subordinate-linksYY
show-successor-linksYY