pub const BIB_DISPLAY: &str = "bib-entry-display";
pub const BIB_REF_DISPLAY: &str = "bib-ref-display";
pub const BIB_HIDE_UNUSED: &str = "bib-hide-unused";

pub const META_AUTHOR: &str = "author";
pub const META_TITLE: &str = "title";
pub const META_DATE: &str = "date";
pub const META_LANG: &str = "lang";