| all_labels | Get all chunk labels in a document | 
| all_patterns | All built-in patterns | 
| asis_output | Mark an R object with a special class | 
| cache_engines | Cache engines of other languages | 
| chunk_hook | Built-in chunk hooks to extend knitr | 
| clean_cache | Clean cache files that are probably no longer needed | 
| combine_words | Combine multiple words into a single string | 
| convert_chunk_header | Convert the in-header chunk option syntax to the in-body... | 
| current_input | Query the current input filename | 
| dep_auto | Build automatic dependencies among chunks | 
| dep_prev | Make later chunks depend on previous chunks | 
| download_image | Download an image from the web and include it in a document | 
| engine_output | An output wrapper for language engine output | 
| fig_chunk | Obtain the figure filenames for a chunk | 
| fig_path | Path for figure files | 
| hook_animation | Hooks to create animations in HTML output | 
| hook_document | Some potentially useful document hooks | 
| hook_plot | Default plot hooks for different output formats | 
| image_uri | Encode an image file to a data URI | 
| imgur_upload | Upload an image to imgur.com | 
| include_graphics | Embed external images in 'knitr' documents | 
| include_url | Embed a URL as an HTML iframe or a screenshot in 'knitr'... | 
| inline_expr | Wrap code using the inline R expression syntax | 
| is_low_change | Compare two recorded plots | 
| kable | Create tables in LaTeX, HTML, Markdown and reStructuredText | 
| knit | Knit a document | 
| knit2html | Convert markdown to HTML using knit() and mark_html() | 
| knit2pandoc | Convert various input files to various output files using... | 
| knit2pdf | Convert Rnw or Rrst files to PDF | 
| knit2wp | Knit an R Markdown document and post it to WordPress | 
| knit_child | Knit a child document | 
| knit_code | The code manager to manage code in all chunks | 
| knit_engines | Engines of other languages | 
| knit_exit | Exit knitting early | 
| knit_expand | A simple macro preprocessor for templating purposes | 
| knit_filter | Spell check filter for source documents | 
| knit_global | The global environment for evaluating code | 
| knit_hooks | Hooks for R code chunks, inline R code and output | 
| knit_meta | Metadata about objects to be printed | 
| knit_params | Extract knit parameters from a document | 
| knit_params_yaml | Extract knit parameters from YAML text | 
| knit_patterns | Patterns to match and extract R code in a document | 
| knit_print | A custom printing function | 
| knit_rd | Knit package documentation | 
| knitr-package | A general-purpose tool for dynamic report generation in R | 
| knit_theme | Syntax highlighting themes | 
| knit_watch | Watch an input file continuously and knit it when it is... | 
| load_cache | Load the cache database of a code chunk | 
| opts_chunk | Default and current chunk options | 
| opts_hooks | Hooks for code chunk options | 
| opts_knit | Options for the knitr package | 
| opts_template | Template for creating reusable chunk options | 
| output_hooks | Set or get output hooks for different output formats | 
| output_type | Check the current input and output type | 
| pandoc | A Pandoc wrapper to convert documents to other formats | 
| partition_chunk | Partition chunk options from the code chunk body | 
| pat_fun | Set regular expressions to read input documents | 
| plot_crop | Crop a plot (remove the edges) using PDFCrop or ImageMagick | 
| rand_seed | An unevaluated expression to return .Random.seed if exists | 
| raw_block | Mark character strings as raw blocks in R Markdown | 
| raw_output | Mark character strings as raw output that should not be... | 
| read_chunk | Read chunks from an external script | 
| rnw2pdf | Convert an 'Rnw' document to PDF | 
| rocco | Knit R Markdown using the classic Docco style | 
| rst2pdf | A wrapper for rst2pdf | 
| set_alias | Set aliases for chunk options | 
| set_header | Set the header information | 
| set_parent | Specify the parent document of child documents | 
| sew | Wrap evaluated results for output | 
| spin | Spin goat's hair into wool | 
| spin_child | Spin a child R script | 
| stitch | Automatically create a report based on an R script and a... | 
| Sweave2knitr | Convert Sweave to knitr documents | 
| vignette_engines | Package vignette engines | 
| wrap_rmd | Wrap long lines in Rmd files | 
| write_bib | Generate BibTeX bibliography databases for R packages | 
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