(function options_init(): void {
    "use strict";
    const optionDef:optionDef = {
        attribute_sort   : {
            api       : "any",
            default   : false,
            definition: "Alphanumerically sort markup attributes. Attribute sorting is ignored on tags that contain attributes template attributes.",
            label     : "Sort Attributes",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        attribute_sort_list: {
            api:"any",
            default: "",
            definition: "A comma separated list of attribute names. Attributes will be sorted according to this list and then alphanumerically. This option requires 'attribute_sort' have a value of true.",
            label: "Sort Attribute List",
            lexer: "markup",
            mode : "any",
            type: "string"
        },
        brace_line       : {
            api       : "any",
            default   : false,
            definition: "If true an empty line will be inserted after opening curly braces and before clo" +
                    "sing curly braces.",
            label     : "Brace Lines",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        brace_padding    : {
            api       : "any",
            default   : false,
            definition: "Inserts a space after the start of a container and before the end of the contain" +
                    "er if the contents of that container are not indented; such as: conditions, func" +
                    "tion arguments, and escaped sequences of template strings.",
            label     : "Brace Padding",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        brace_style      : {
            api       : "any",
            default   : "none",
            definition: "Emulates JSBeautify's brace_style option using existing Pretty Diff options.",
            label     : "Brace Style",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                "collapse"                : "Sets options.format_object to 'indent' and options.neverflatten to true.",
                "collapse-preserve-inline": "Sets options.bracepadding to true and options.format_object to 'inline'.",
                "expand"                  : "Sets options.braces to true, options.format_object to 'indent', and options.never" +
                        "flatten to true.",
                "none"                    : "Ignores this option"
            }
        },
        braces           : {
            api       : "any",
            default   : false,
            definition: "Determines if opening curly braces will exist on the same line as their conditio" +
                    "n or be forced onto a new line. (Allman style indentation).",
            label     : "Style of Indent",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        case_space        : {
            api       : "any",
            default   : false,
            definition: "If the colon separating a case's expression (of a switch/case block) from its statement should be followed by a space instead of indentation, thereby keeping the case on a single line of code.",
            label     : "Space Following Case",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        color            : {
            api       : "any",
            default   : "white",
            definition: "The color scheme of the reports.",
            label     : "Color",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                "canvas": "A light brown color scheme",
                "shadow": "A black and ashen color scheme",
                "white" : "A white and pale grey color scheme"
            }
        },
        comment_line     : {
            api       : "any",
            default   : false,
            definition: "If a blank new line should be forced above comments.",
            label     : "Force an Empty Line Above Comments",
            lexer     : "markup",
            mode      : "beautify",
            type      : "boolean"
        },
        comments         : {
            api       : "any",
            default   : false,
            definition: "This will determine whether comments should always start at position 0 of each l" +
                    "ine or if comments should be indented according to the code.",
            label     : "Indent Comments",
            lexer     : "any",
            mode      : "beautify",
            type      : "boolean"
        },
        complete_document: {
            api       : "any",
            default   : false,
            definition: "Allows a preference for generating a complete HTML document instead of only gene" +
                    "rating content.",
            label     : "Generate A Complete HTML File",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        compressed_css   : {
            api       : "any",
            default   : false,
            definition: "If CSS should be beautified in a style where the properties and values are minif" +
                    "ed for faster reading of selectors.",
            label     : "Compressed CSS",
            lexer     : "style",
            mode      : "beautify",
            type      : "boolean"
        },
        conditional      : {
            api       : "any",
            default   : false,
            definition: "If true then conditional comments used by Internet Explorer are preserved at min" +
                    "ification of markup.",
            label     : "IE Comments (HTML Only)",
            lexer     : "markup",
            mode      : "minify",
            type      : "boolean"
        },
        config           : {
            api       : "node",
            default   : "",
            definition: "By default Pretty Diff will look into the directory structure contain the value of option 'source' for a file named `.prettydiffrc` for saved option settings. This option allows a user to specify any file at any location in the local file system for configuration settings. A value of 'none' tells the application to bypass reading any configuration file.",
            label     : "Custom Config File Location",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        content          : {
            api       : "any",
            default   : false,
            definition: "This will normalize all string content to 'text' so as to eliminate some differe" +
                    "nces from the output.",
            label     : "Ignore Content",
            lexer     : "any",
            mode      : "diff",
            type      : "boolean"
        },
        correct          : {
            api       : "any",
            default   : false,
            definition: "Automatically correct some sloppiness in code.",
            label     : "Fix Sloppy Code",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        crlf             : {
            api       : "any",
            default   : false,
            definition: "If line termination should be Windows (CRLF) format.  Unix (LF) format is the de" +
                    "fault.",
            label     : "Line Termination",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        css_insert_lines : {
            api       : "any",
            default   : false,
            definition: "Inserts new line characters between every CSS code block.",
            label     : "Insert Empty Lines",
            lexer     : "style",
            mode      : "beautify",
            type      : "boolean"
        },
        diff             : {
            api       : "any",
            default   : "",
            definition: "The code sample to be compared to 'source' option.  This is required if mode is " +
                    "'" + "diff'.",
            label     : "Code to Compare",
            lexer     : "any",
            mode      : "diff",
            type      : "string"
        },
        diff_comments    : {
            api       : "any",
            default   : false,
            definition: "If true then comments will be preserved so that both code and comments are compa" +
                    "red by the diff engine.",
            label     : "Code Comments",
            lexer     : "any",
            mode      : "diff",
            type      : "boolean"
        },
        diff_context     : {
            api       : "any",
            default   : -1,
            definition: "This shortens the diff output by allowing a specified number of equivalent lines" +
                    " between each line of difference.  This option is only used with diff_format:htm" +
                    "l.",
            label     : "Context Size",
            lexer     : "any",
            mode      : "diff",
            type      : "number"
        },
        diff_format      : {
            api       : "any",
            default   : "text",
            definition: "The format of the output.  The command line output format is text, similar to Un" +
                    "ix 'diff'.",
            label     : "Diff Format",
            lexer     : "any",
            mode      : "diff",
            type      : "string",
            values    : {
                "html": "An HTML format for embedding in web pages, or as a complete web page if document" +
                        "_complete is true.",
                "json": "A JSON format.",
                "text": "Formatted similar to the Unix 'diff' command line utility."
            }
        },
        diff_label       : {
            api       : "any",
            default   : "New Sample",
            definition: "This allows for a descriptive label for the diff file code of the diff HTML outp" +
                    "ut.",
            label     : "Label for Diff Sample",
            lexer     : "any",
            mode      : "diff",
            type      : "string"
        },
        diff_rendered_html: {
            api: "any",
            default: false,
            definition: "Compares complete HTML documents and injects custom CSS so that the differences display not in the code, but in the rendered page in a browser.  This option is currently confined only to markup languages, read_method file, and mode diff.  Option diff_format is ignored.",
            label: "Compare Rendered HTML",
            lexer: "markup",
            mode: "diff",
            type: "boolean"
        },
        diff_space_ignore: {
            api       : "any",
            default   : false,
            definition: "If white space only differences should be ignored by the diff tool.",
            label     : "Remove White Space",
            lexer     : "any",
            mode      : "diff",
            type      : "boolean"
        },
        diff_view        : {
            api       : "any",
            default   : "sidebyside",
            definition: "This determines whether the diff HTML output should display as a side-by-side co" +
                    "mparison or if the differences should display in a single table column.",
            label     : "Diff View Type",
            lexer     : "any",
            mode      : "diff",
            type      : "string",
            values    : {
                "inline"    : "A single column where insertions and deletions are vertically adjacent.",
                "sidebyside": "Two column comparison of changes."
            }
        },
        else_line        : {
            api       : "any",
            default   : false,
            definition: "If else_line is true then the keyword 'else' is forced onto a new line.",
            label     : "Else On New Line",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        end_comma        : {
            api       : "any",
            default   : "never",
            definition: "If there should be a trailing comma in arrays and objects. Value \"multiline\" o" +
                    "nly applies to modes beautify and diff.",
            label     : "Trailing Comma",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                "always"   : "Always ensure there is a tailing comma",
                "never"    : "Remove trailing commas",
                "none"     : "Ignore this option"
            }
        },
        end_quietly      : {
            api       : "node",
            default   : "default",
            definition: "A node only option to determine if terminal summary data should be logged to the" +
                    " console.",
            label     : "Log Summary to Console",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                "default": "Default minimal summary",
                "log"    : "Verbose logging",
                "quiet"  : "No extraneous logging"
            }
        },
        force_attribute  : {
            api       : "any",
            default   : false,
            definition: "If all markup attributes should be indented each onto their own line.",
            label     : "Force Indentation of All Attributes",
            lexer     : "markup",
            mode      : "beautify",
            type      : "boolean"
        },
        force_indent     : {
            api       : "any",
            default   : false,
            definition: "Will force indentation upon all content and tags without regard for the creation" +
                    " of new text nodes.",
            label     : "Force Indentation of All Content",
            lexer     : "markup",
            mode      : "beautify",
            type      : "boolean"
        },
        format_array     : {
            api       : "any",
            default   : "default",
            definition: "Determines if all array indexes should be indented, never indented, or left to t" +
                    "he default.",
            label     : "Formatting Arrays",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                "default": "Default formatting",
                "indent" : "Always indent each index of an array",
                "inline" : "Ensure all array indexes appear on a single line"
            }
        },
        format_object    : {
            api       : "any",
            default   : "default",
            definition: "Determines if all object keys should be indented, never indented, or left to the" +
                    " default.",
            label     : "Formatting Objects",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                "default": "Default formatting",
                "indent" : "Always indent each key/value pair",
                "inline" : "Ensure all key/value pairs appear on the same single line"
            }
        },
        function_name    : {
            api       : "any",
            default   : false,
            definition: "If a space should follow a JavaScript function name.",
            label     : "Space After Function Name",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        help             : {
            api       : "node",
            default   : 80,
            definition: "A node only option to print documentation to the console. The value determines w" +
                    "here to wrap text.",
            label     : "Help Wrapping Limit",
            lexer     : "any",
            mode      : "any",
            type      : "number"
        },
        indent_char      : {
            api       : "any",
            default   : " ",
            definition: "The string characters to comprise a single indentation. Any string combination i" +
                    "s accepted.",
            label     : "Indentation Characters",
            lexer     : "any",
            mode      : "beautify",
            type      : "string"
        },
        indent_level     : {
            api       : "any",
            default   : 0,
            definition: "How much indentation padding should be applied to beautification? This option is" +
                    " internally used for code that requires switching between libraries.",
            label     : "Indentation Padding",
            lexer     : "any",
            mode      : "beautify",
            type      : "number"
        },
        indent_size      : {
            api       : "any",
            default   : 4,
            definition: "The number of 'indent_char' values to comprise a single indentation.",
            label     : "Indent Size",
            lexer     : "any",
            mode      : "beautify",
            type      : "number"
        },
        jsscope          : {
            api       : "any",
            default   : "none",
            definition: "An educational tool to generate HTML output of JavaScript code to identify scope" +
                    " regions and declared references by color.  This option is ignored unless the code language is JavaScript or TypeScript.",
            label     : "JavaScript Scope Identification",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                html  : "generates HTML output with escaped angle braces and ampersands for embedding as " +
                        "code, which is handy in code producing tools",
                none  : "prevents use of this option",
                report: "generates HTML output that renders in web browsers"
            }
        },
        language         : {
            api       : "any",
            default   : "auto",
            definition: "The lowercase single word common name of the source code's programming language. The value 'auto' imposes language and lexer auto-detection, which ignores deliberately specified lexer values. The value 'text' is converted to 'auto' if options 'mode' is not 'diff'. Value 'text' allows literal comparisons.",
            label     : "Language",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        language_default : {
            api       : "any",
            default   : "text",
            definition: "The fallback option if option 'lang' is set to 'auto' and a language cannot be d" +
                    "etected.",
            label     : "Language Auto-Detection Default",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        language_name    : {
            api       : "any",
            default   : "JavaScript",
            definition: "The formatted proper name of the code sample's language for use in reports read " +
                    "by people.",
            label     : "Formatted Name of the Code's Language",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        lexer            : {
            api       : "any",
            default   : "auto",
            definition: "This option determines which sets of rules to use in the language parser. If opt" +
                    "ion 'language' has a value of 'auto', which is the default value, this option is" +
                    " ignored. The value 'text' is converted to 'auto' if options 'mode' is not 'diff'. Value 'text' allows literal comparisons.",
            label     : "Parsing Lexer",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                auto  : "The value 'auto' imposes language and lexer auto-detection, which ignores deliberately specified language values.",
                markup: "parses languages like XML and HTML",
                script: "parses languages with a C style syntax, such as JavaScript",
                style : "parses CSS like languages"
            }
        },
        list_options     : {
            api       : "node",
            default   : false,
            definition: "A Node.js only option that writes current option settings to the console.",
            label     : "Options List",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        method_chain     : {
            api       : "any",
            default   : 3,
            definition: "When to break consecutively chained methods and properties onto separate lines. " +
                    "A negative value disables this option. A value of 0 ensures method chains are ne" +
                    "ver broken.",
            label     : "Method Chains",
            lexer     : "script",
            mode      : "beautify",
            type      : "number"
        },
        minify_keep_comments : {
            api       : "any",
            default   : false,
            definition: "Prevents minification from stripping out comments.",
            label     : "Keep Comments",
            lexer     : "any",
            mode      : "minify",
            type      : "boolean"
        },
        minify_wrap      : {
            api       : "any",
            default   : false,
            definition: "Whether minified script should wrap after a specified character width.  This opt" +
                    "ion requires a value from option 'wrap'.",
            label     : "Minification Wrapping",
            lexer     : "script",
            mode      : "minify",
            type      : "boolean"
        },
        mode             : {
            api       : "any",
            default   : "diff",
            definition: "The operation to be performed.",
            label     : "Mode",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                beautify: "beautifies code and returns a string",
                diff    : "returns either command line list of differences or an HTML report",
                minify  : "minifies code and returns a string",
                parse   : "using option 'parseFormat' returns an object with shallow arrays, a multidimensi" +
                        "onal array, or an HTML report"
            }
        },
        never_flatten    : {
            api       : "any",
            default   : false,
            definition: "If destructured lists in script should never be flattend.",
            label     : "Never Flatten Destructured Lists",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        new_line         : {
            api       : "any",
            default   : false,
            definition: "Insert an empty line at the end of output.",
            label     : "New Line at End of Code",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        no_case_indent   : {
            api       : "any",
            default   : false,
            definition: "If a case statement should receive the same indentation as the containing switch" +
                    " block.",
            label     : "Case Indentation",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        no_lead_zero     : {
            api       : "any",
            default   : false,
            definition: "Whether leading 0s in CSS values immediately preceding a decimal should be remo" +
                    "ved or prevented.",
            label     : "Leading 0s",
            lexer     : "style",
            mode      : "any",
            type      : "boolean"
        },
        no_semicolon     : {
            api       : "any",
            default   : false,
            definition: "Removes semicolons that would be inserted by ASI. This option is in conflict with option 'correct' and takes precedence over conflicting features. Use of this option is a possible security/stability risk.",
            label     : "No Semicolons",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        node_error       : {
            api       : "node",
            default   : false,
            definition: "A Node.js only option if parse errors should be written to the console.",
            label     : "Write Parse Errors in Node",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        object_sort      : {
            api       : "any",
            default   : false,
            definition: "Sorts markup attributes and properties by key name in script and style.",
            label     : "Object/Attribute Sort",
            lexer     : "any",
            mode      : "beautify",
            type      : "boolean"
        },
        output           : {
            api       : "node",
            default   : "",
            definition: "A file path for which to write output. If this option is not specified output will be printed to the shell.",
            label     : "Output Location",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        parse_format     : {
            api       : "any",
            default   : "parallel",
            definition: "Determines the output format for 'parse' mode.",
            label     : "Parse Format",
            lexer     : "any",
            mode      : "parse",
            type      : "string",
            values    : {
                htmltable : "generates the 'table' type output for the DOM but escapes the HTML tags for rend" +
                        "ering as HTML code in a HTML tool",
                parallel  : "returns an object containing series of parallel arrays",
                sequential: "returns an array where each index is a child object containing the parsed token" +
                        " and all descriptive data",
                table     : "generates a colorful grid of output for either the dom or command line interface"
            }
        },
        parse_space      : {
            api       : "any",
            default   : false,
            definition: "Whether whitespace tokens should be included in markup parse output.",
            label     : "Retain White Space Tokens in Parse Output",
            lexer     : "markup",
            mode      : "parse",
            type      : "boolean"
        },
        preserve         : {
            api       : "any",
            default   : 0,
            definition: "The maximum number of consecutive empty lines to retain.",
            label     : "Preserve Consecutive New Lines",
            lexer     : "any",
            mode      : "beautify",
            type      : "number"
        },
        preserve_comment : {
            api       : "any",
            default   : false,
            definition: "Prevent comment reformatting due to option wrap.",
            label     : "Eliminate Word Wrap Upon Comments",
            lexer     : "any",
            mode      : "beautify",
            type      : "boolean"
        },
        preserve_text    : {
            api       : "any",
            default   : false,
            definition: "If text in the provided markup code should be preserved exactly as provided. Thi" +
                    "s option eliminates beautification and wrapping of text content.",
            label     : "Preserve Markup Text White Space",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        quote            : {
            api       : "any",
            default   : false,
            definition: "If true and mode is 'diff' then all single quote characters will be replaced by " +
                    "double quote characters in both the source and diff file input so as to eliminat" +
                    "e some differences from the diff report HTML output.",
            label     : "Normalize Quotes",
            lexer     : "any",
            mode      : "diff",
            type      : "boolean"
        },
        quote_convert    : {
            api       : "any",
            default   : "none",
            definition: "If the quotes of script strings or markup attributes should be converted to sing" +
                    "le quotes or double quotes.",
            label     : "Indent Size",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                "double": "Converts single quotes to double quotes",
                "none"  : "Ignores this option",
                "single": "Converts double quotes to single quotes"
            }
        },
        read_method      : {
            api       : "node",
            default   : "auto",
            definition: "The option determines how Node.js should receive input.  All output will be prin" +
                    "ted to the shell unless the option 'output' is specified, which will write outpu" +
                    "t to a file.",
            label     : "Read Method",
            lexer     : "any",
            mode      : "any",
            type      : "string",
            values    : {
                auto        : "changes to value subdirectory, file, or screen depending on source resolution",
                directory   : "process all files in the specified directory only",
                file        : "reads a file and outputs to a file.  file requires option 'output'",
                screen      : "reads from screen and outputs to screen",
                subdirectory: "process all files in a directory and its subdirectories"
            }
        },
        selector_list    : {
            api       : "any",
            default   : false,
            definition: "If comma separated CSS selectors should present on a single line of code.",
            label     : "Indent Size",
            lexer     : "style",
            mode      : "beautify",
            type      : "boolean"
        },
        semicolon        : {
            api       : "any",
            default   : false,
            definition: "If true and mode is 'diff' and lang is 'javascript' all semicolon characters tha" +
                    "t immediately precede any white space containing a new line character will be re" +
                    "moved so as to eliminate some differences from the code comparison.",
            label     : "Indent Size",
            lexer     : "script",
            mode      : "diff",
            type      : "boolean"
        },
        source           : {
            api       : "any",
            default   : "",
            definition: "The source code or location for interpretation. This option is required for all " +
                    "modes.",
            label     : "Source Sample",
            lexer     : "any",
            mode      : "any",
            type      : "string"
        },
        source_label     : {
            api       : "any",
            default   : "Source Sample",
            definition: "This allows for a descriptive label of the source file code for the diff HTML o" +
                    "utput.",
            label     : "Label for Source Sample",
            lexer     : "any",
            mode      : "diff",
            type      : "string"
        },
        space            : {
            api       : "any",
            default   : true,
            definition: "Inserts a space following the function keyword for anonymous functions.",
            label     : "Function Space",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        space_close      : {
            api       : "any",
            default   : false,
            definition: "Markup self-closing tags end will end with ' />' instead of '/>'.",
            label     : "Close Markup Self-Closing Tags with a Space",
            lexer     : "markup",
            mode      : "beautify",
            type      : "boolean"
        },
        styleguide       : {
            api       : "any",
            default   : "none",
            definition: "Provides a collection of option presets to easily conform to popular JavaScript " +
                    "style guides.",
            label     : "Script Styleguide",
            lexer     : "script",
            mode      : "beautify",
            type      : "string",
            values    : {
                "airbnb"   : "https://github.com/airbnb/javascript",
                "crockford": "http://jslint.com/",
                "google"   : "https://google.github.io/styleguide/jsguide.html",
                "jquery"   : "https://contribute.jquery.org/style-guide/js/",
                "jslint"   : "http://jslint.com/",
                "mediawiki": "https://www.mediawiki.org/wiki/Manual:Coding_conventions/JavaScript",
                "mrdoob"   : "https://github.com/mrdoob/three.js/wiki/Mr.doob's-Code-Style%E2%84%A2",
                "none"     : "Ignores this option",
                "semistandard": "https://github.com/Flet/semistandard",
                "standard" : "https://standardjs.com/",
                "yandex"   : "https://github.com/ymaps/codestyle/blob/master/javascript.md"
            }
        },
        summary_only     : {
            api       : "node",
            default   : false,
            definition: "Node only option to output only number of differences.",
            label     : "Output Diff Only Without A Summary",
            lexer     : "any",
            mode      : "diff",
            type      : "boolean"
        },
        tag_merge        : {
            api       : "any",
            default   : false,
            definition: "Allows immediately adjacement start and end markup tags of the same name to be c" +
                    "ombined into a single self-closing tag.",
            label     : "Merge Adjacent Start and End tags",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        tag_sort         : {
            api       : "any",
            default   : false,
            definition: "Sort child items of each respective markup parent element.",
            label     : "Sort Markup Child Items",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        ternary_line     : {
            api       : "any",
            default   : false,
            definition: "If ternary operators in JavaScript ? and : should remain on the same line.",
            label     : "Keep Ternary Statements On One Line",
            lexer     : "script",
            mode      : "beautify",
            type      : "boolean"
        },
        top_comments     : {
            api       : "any",
            default   : false,
            definition: "If mode is 'minify' this determines whether comments above the first line of cod" +
                    "e should be kept.",
            label     : "Retain Comment At Code Start",
            lexer     : "any",
            mode      : "minify",
            type      : "boolean"
        },
        unformatted      : {
            api       : "any",
            default   : false,
            definition: "If markup tags should have their insides preserved. This option is only available to markup and does not support child tokens that require a different lexer.",
            label     : "Markup Tag Preservation",
            lexer     : "markup",
            mode      : "any",
            type      : "boolean"
        },
        variable_list    : {
            api       : "any",
            default   : "none",
            definition: "If consecutive JavaScript variables should be merged into a comma separated list" +
                    " or if variables in a list should be separated.",
            label     : "Variable Declaration Lists",
            lexer     : "script",
            mode      : "any",
            type      : "string",
            values    : {
                "each": "Ensurce each reference is a single declaration statement.",
                "list": "Ensure consecutive declarations are a comma separated list.",
                "none": "Ignores this option."
            }
        },
        version          : {
            api       : "node",
            default   : false,
            definition: "A Node.js only option to write the version information to the console.",
            label     : "Version",
            lexer     : "any",
            mode      : "any",
            type      : "boolean"
        },
        vertical         : {
            api       : "any",
            default   : false,
            definition: "If lists of assignments and properties should be vertically aligned. This option" +
                    " is not used with the markup lexer.",
            label     : "Vertical Alignment",
            lexer     : "any",
            mode      : "beautify",
            type      : "boolean"
        },
        wrap             : {
            api       : "any",
            default   : 0,
            definition: "Character width limit before applying word wrap. A 0 value disables this option." +
                    " A negative value concatenates script strings.",
            label     : "Wrap",
            lexer     : "any",
            mode      : "any",
            type      : "number"
        }
    };
    global
        .prettydiff
        .api
        .optionDef  = optionDef;
}());