-Params <FEATURE>: append-row|append-column|delete-row|delete-column|copy-row|cop
-y-column| toggle-line-top|toggle-line-bottom|toggle-line-left|toggle-line-right|
- align-left|align-right|align-center|align-block|valign-top|valign-bottom|
- valign-middle|m-align-left|m-align-right|m-align-center|m-valign-top| m-valign-
-bottom|m-valign-middle|multicolumn|set-all-lines|unset-all-lines| set-longtabula
-r|unset-longtabular|set-pwidth|set-mpwidth| set-rotate-tabular|unset-rotate-tabu
-lar|toggle-rotate-tabular| set-rotate-cell|unset-rotate-cell|toggle-rotate-cell|
-set-usebox|set-lthead| unset-lthead|set-ltfirsthead|unset-ltfirsthead|set-ltfoot
-|unset-ltfoot| set-ltlastfoot|unset-ltlastfoot|set-ltnewpage|toggle-ltcaption|
- set-special-column|set-special-multi|set-booktabs|unset-booktabs| set-top-space
-|set-bottom-space|set-interline-space|set-border-lines| tabular-valign-top|tabul
-ar-valign-middle|tabular-valign-bottom
-\begin_inset Newline newline
-\end_inset
-
- <ARG>: additional argument for some commands, use debug mode to explore
- its values.
-