# Contextual Menu Options

The ui/menu component implements the contextual menu that you get when you right-click (or control-click) on a typeset expression. The settings in the menu are “sticky”, which means that they are saved from page to page and session to session (though they web-site specific, so each web site has its own saved settings).

As a page author, you can alter the default settings of the menu by using the `menuOptions` block of the `options` section of your MathJax configuration, as described below.

The ui/menu component adds a render action called `addMenu` that attaches the menu event handlers to the typeset output. (It also adds a second render action called `checkLoading` that mediates the loading of extensions needed by the contextual menu. For example, when the assistive a11y/explorer component is first activated, MathJax may need to load the a11y/explorer component; this render action makes sure that has happened before any math is typeset.)

If you want to disable the contextual menu, you can set the `enableMenu` option to `false`:

## The Configuration Block

    MathJax = {
      options: {
        enableMenu: true,          // set to false to disable the menu
        menuOptions: {
          settings: {
            texHints: true,        // put TeX-related attributes on MathML
            semantics: false,      // put original format in <semantic> tag in MathML
            zoom: 'NoZoom',        // or 'Click' or 'DoubleClick' as zoom trigger
            zscale: '200%',        // zoom scaling factor
            renderer: 'CHTML',     // or 'SVG'
            alt: false,            // true if ALT required for zooming
            cmd: false,            // true if CMD required for zooming
            ctrl: false,           // true if CTRL required for zooming
            shift: false,          // true if SHIFT required for zooming
            scale: 1,              // scaling factor for all math
            inTabOrder: true,      // true if tabbing includes math

            assistiveMml: true,    // true if hidden assistive MathML should be generated for screen readers
            collapsible: false,    // true if complex math should be collapsible
            explorer: false,       // true if the expression explorer should be active
          },
          annotationTypes: {
            TeX: ['TeX', 'LaTeX', 'application/x-tex'],
            StarMath: ['StarMath 5.0'],
            Maple: ['Maple'],
            ContentMathML: ['MathML-Content', 'application/mathml-content+xml'],
            OpenMath: ['OpenMath']
          }
        }
      }
    };

## Option Descriptions

enableMenu: true

  This controls whether the MathJax contextual menu will be added to the typeset mathematics or not.

settings: {...}

  These settings give the default menu settings for the page, though a user can change them using the menu. These are described in the comments in the example above.

annotationTypes: {...}

  These are the settings for the “Annotation” submenu of the “Show Math As” menu. If the `<math>` root element has a `<semantics>` child that contains one of the specified annotation formats, the source will be available via the “Show Math As” and “Copy to Clipboard” menus. Each format has a list of possible encodings. For example, the line

      TeX: ['TeX', 'LaTeX', 'application/x-tex']

  maps an annotation with an encoding of `TeX`, `LaTeX`, or `application/x-tex` to the “TeX” entry in the “Annotation” sub-menus.

## Developer Options

    MathJax = {
      options: {
        MenuClass: Menu,
        menuOptions: {
          jax: {
            CHTML: null,
            SVG: null
          }
        }
      }
    };

menuClass: Menu

  The `Menu` object class to use for creating the menu. This allows you to create a subclass of `Menu` and pass that to the document in pace of the default one.

jax: {CHTML: null, SVG: null}

  This lists the output jax instances to be used for the different output formats. These will get set up automatically by the menu code if you don’t specify one, so it is only necessary to set these if you want to manage the options specially.