anchor.diff:  <% end %>
   
   
  -<% function 'meta.global-variable-exists($name)',
  -            'global-variable-exists($name)',
  +<% function 'meta.global-variable-exists($name, $module: null)',
  +            'global-variable-exists($name, $module: null)',
               returns: 'boolean' do %>
     Returns whether a [global variable][] named `$name` (without the `$`) exists.
   
     [global variable]: ../variables#scope
  +
  +  If `$module` is `null`, this returns whether a variable named `$name` without
  +  a namespace exists. Otherwise, `$module` must be a string matching the
  +  namespace of a [`@use` rule][] in the current file, in which case this returns
  +  whether that module has a variable named `$name`.
  +
  +  [`@use` rule]: ../at-rules/use
   
     See also [`meta.variable-exists()`](#variable-exists).
   
  
positive.code: <% end %>
  
  
  <% function 'meta.mixin-exists($name)',
              'mixin-exists($name)',
              returns: 'boolean' do %>
    Returns whether a [mixin][] named `$name` exists.
  
    [mixin]: ../at-rules/mixin
  
    <% example(autogen_css: false) do %>
      @debug meta.mixin-exists("shadow-none"); // false
  
negative.code: <% end %>
  
  
  <% function 'meta.get-function($name, $css: false, $module: null)',
              'get-function($name, $css: false, $module: null)',
              returns: 'function' do %>
    Returns the [function][] named `$name`.
  
    [function]: ../values/functions
  
    If `$module` is `null`, this returns the function named `$name` without a
    namespace (including [global built-in functions][]). Otherwise, `$module` must
    be a string matching the namespace of a [`@use` rule][] in the current file,
    in which case this returns the function in that module named `$name`.
  
    [global built-in functions]: ../modules#global-functions
    [`@use` rule]: ../at-rules/use
  
    By default, this throws an error if `$name` doesn't refer to Sass function.
    However, if `$css` is `true`, it instead returns a [plain CSS function][].
  
    [user-defined]: ../at-rules/function
    [plain CSS function]: ../at-rules/function#plain-css-functions
  