/*! \page featured_options Featured Options Overview of popular features and problems \tableofcontents \section indenting Indenting output for readability Indenting the source markup of an HTML document makes the markup easier to read. Tidy can indent the markup for an HTML document while recognizing elements whose contents should not be indented. In the example below, Tidy indents the output while preserving the formatting of the `
` element:

Input:
\code{.html}

 
 Test document
 
 
 
This example shows how Tidy can indent output while preserving
 formatting of particular elements.


 
This is
 genuine
       preformatted
    text
 

 
 
 \endcode 
 
 Output:
\code{.html}

    
        Test document
    

    
        
This example shows how Tidy can indent output while preserving
        formatting of particular elements.


This is
genuine
       preformatted
   text


    

\endcode 

Tidy’s indenting behavior is not perfect and can sometimes cause your output to be rendered by browsers in a different way than the input. You can 
avoid unexpected indenting-related rendering problems by setting `indent:no` or `indent:auto` in a config file.

\note 
    Preserving original indenting not possible


    Tidy is not capable of preserving the original indenting of the markup from the input it receives. That’s because Tidy starts by 
    building a clean parse tree from the input, and that parse tree doesn’t contain any information about the original indenting. Tidy then 
    pretty-prints the parse tree using the current config settings. Trying to preserve the original 
    indenting from the input would interact badly with the repair operations needed to build a clean parse tree, and would considerably complicate the code.

    
\section encodings Encodings and character references

Tidy defaults to assuming you want output to be encoded in `UTF-8`. But Tidy offers you a choice of other 
character encodings: `US ASCII`, `ISO Latin-1`, and the `ISO 2022` family of 7 bit encodings.

Tidy doesn’t yet recognize the use of the HTML `` element for specifying the character encoding.

The full set of HTML character references are defined. Cleaned-up output uses named character references for characters when appropriate. Otherwise, 
characters outside the normal range are output as numeric character references.

\section accessibility Accessibility

Tidy offers advice on potential accessibility problems for people using non-graphical browsers.

\section cleaning_presentational Cleaning up presentational markup

Some tools generate HTML with presentational elements such as ``, ``, and `
`. Tidy’s -clean option will replace those elements with `