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(widget)constants

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The Constant Widgets
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   The `const' widget can contain any lisp expression, but the user is
prohibited from editing it, which is mainly useful as a component of one
of the composite widgets.

   The syntax for the `const' widget is:

     TYPE ::= (const [KEYWORD ARGUMENT]...  [ VALUE ])

   The VALUE, if present, is used to initialize the `:value' property
and can be any s-expression.

 - Widget: const
     This will display any valid s-expression in an immutable part of
     the buffer.

   There are two variations of the `const' widget, namely
`variable-item' and `function-item'.  These should contain a symbol
with a variable or function binding.  The major difference from the
`const' widget is that they will allow the user to see the variable or
function documentation for the symbol.

 - Widget: variable-item
     An immutable symbol that is bound as a variable.

 - Widget: function-item
     An immutable symbol that is bound as a function.