available_fonts         List the fonts that have been loaded
available_highlighters
                        Syntax highlighting languages available
define_macro            Define a LaTeX shorthand for every label
element_latex           A ggplot2 theme element for LaTeX text
element_markdown        A ggplot2 theme element for markdown text
geom_latex              A ggplot2 geom for LaTeX math labels
geom_markdown           A ggplot2 geom for markdown labels
grobMark                Position of a named point in a LaTeX grob
latex_cache_limit       Layout cache
latex_dims              Size of a LaTeX expression
latex_grob              Create a grid grob from LaTeX
latex_options           Set or show default rendering options
latex_tree              The layout of a LaTeX expression
latex_wrap              Wrap the text of a label in \text{}
load_font               Load a font
markdown_box_grob       Render a markdown document as a boxed grid grob
markdown_grob           Render a markdown label as a grid grob
markdown_style          A style for markdown rendering
md_style                Declarations for one markdown tag
register_highlighter    Add a syntax highlighting grammar
