- LibraryName => C4::Context->preference("LibraryName"),
- OpacNav => C4::Context->preference("OpacNav"),
- opaccredits => C4::Context->preference("opaccredits"),
- opacsmallimage => C4::Context->preference("opacsmallimage"),
- opaclayoutstylesheet => C4::Context->preference("opaclayoutstylesheet"),
- opaccolorstylesheet => C4::Context->preference("opaccolorstylesheet"),