526 Plural and capitalized refstyles InsetRef
546 Landscape support
\begin{landscape}...\end{landscape} \begin_inset Flex Landscape (see #11259)
- with longtable content: <features rotate ="90"...>
555 V column type (varwidth package) Automatically detected with newlines, paragraph breaks and environment content in cells of rows
563 InsetArgument listpreamble:<nr> All content between \begin{env} and first \item of a list