This document describes the keywords recognized by the AutoDoc parser,
and their intended use.

===============================================================================

  META KEYWORDS

===============================================================================

Keyword:      @appears
Description:  Tell where the documentation for an item should be shown.
              Gives the full new name of the item. Must be placed
              first in the block, or immediately after any @module,
              @class, or @decl's.
Arguments:    <name> [, type]
              Where:
                <name> is an "absolute" name with identifiers
                  separated by dots. It can also be prefixed by
                  'scope::' where scope is one of the valid scope
                  modules.
                [type] is either "class" or "module" depending on
                  whether the target item should appear as a class or
                  a module. When not present, the choice will be
                  governed by the item's type, as detected by the
                  extractor. Overriding this is only needed for odd
                  special cases such as a module.pmod containing e g:
                    static class _Foo {...};
                    _Foo Foo = _Foo();
Children:     -
Groups with:  -
Examples:     //! @appears predef::stat
              //!   This function is globally visible.
              array stat() {
                // function body
              }

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Keyword:      @belongs
Description:  Tell where the documentation for an item should be
              shown. Gives the name of the new parent module or parent
              class.
Arguments:    <name>
              Where:
                <name> is an "absolute" name with identifiers
                  separated by dots.  It can also be prefixed by
                  'scope::' where scope is one of the valid scope
                  modules.
Children:     -
Groups with:  -
Examples:
              //! @decl int func()
              //! @belongs AnotherModule

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Keyword:      @class
Description:  Declare and enter a new scope for a class. Only in C
              mode. Until an @endclass is found, all declarations will
              be regarded as children of the class.

Arguments:    <name>
              Where:
                <name> is a valid Pike identifier. Not the "absolute"
                  name with dots.

Children:     Documentation for the class, or empty.
Groups with:  -
Examples:
              /*! @class Arne
               *!  A class with a Swedish name. */

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Keyword:      @decl

Description:  Declare a Pike entity and state that the current
              documentation block "is about" that entity. If the
              documentation block is bound to a Pike entity by
              adjacency (if it is a Pike file being extracted), then
              @decl is allowed iff:
                1. The Pike entity in the adjacent code is one method.
                2. All @decl's in the block are methods with the same
                   name as that method. (look at the last example
                   below)

	      The rest of the line after @decl should follow real pike
	      syntax, but the ending semicolon is optional. There are
	      some differences though, notably it allows a type to be
	      specified for constants.

Arguments:    <declaration>
              Where:
                <declaration> is a valid Pike declaration. A trailing
                  ";" is optional.
Children:     Documentation for the entity. After all @decl's may follow
              one of @appears or @belongs.
Groups with:  @decl
Examples:
              //! @decl void explode(string victim);
              //! @decl float root(float x)
              //! @decl mapping(string:string) arguments;
              //!  Doc for these three disparate things.

              //! @decl float cube(float f)
              //! @decl int cube(int i)
              //!  This is how to document a "polymorph" function.
              float|int cube(float|int x) { /* body */ }

	      //! @decl constant int bitmask
	      //!  A constant which has a public type but private value.

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Keyword:      @directive

Description:  Document a Pike cpp directive.

	      The rest of the line should be the cpp directive to document.

Arguments:    [name]
              Where:
                [name] is a cpp directive.
Children:     Documentation for the directive.
Groups with:  @directive
Note:         Typically only used in the cpp:: namespace.
Examples:
              //! @directive #include
              //!
              //! The @tt{#include@} directive is used
              //! to include source code from a different file.

              //! @directive #if
              //! @directive #endif
	      //!
              //!  This is how to document multiple related directives
	      //!  with one documentation string.

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Keyword:      @endclass
Description:  Leave the class scope entered by @class.
Arguments:    [name]
              Where:
                [name] if present, must be the same as the argument to
                  @class.
Children:
Groups with:  -
Examples:
              /*! @endclass Reinhold */

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Keyword:      @endenum
Description:  Leave the enum scope entered by @enum.
Arguments:    [name]
              Where:
                [name] if present, must be the same as the argument to
                  @enum.
Children:
Groups with:  -
Examples:
              /*! @endenum Flags */

_______________________________________________________________________________

Keyword:      @endmodule
Description:  Leave the module scope entered by @module
Arguments:    [name]
              Where:
                [name] if present, must be the same as the argument to
                  @module.
Children:     -
Groups with:  -
Examples:
              /*! @endmodule Roine */

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Keyword:      @endnamespace
Description:  Leave the namespace entered by @namespace.  Symbols
	      defined outside a namespace will be defined in the
	      default namespace "predef::".
Arguments:    [name]
              Where:
                [name] if present, must be the same as the argument to
		  @namespace.
Children:     -
Groups with:  -
Examples:
              /*! @endnamespace lfun:: */

_______________________________________________________________________________

Keyword:      @enum
Description:  Declare and enter a new scope for an enum. Only in C
              mode. Until an @endenum is found, all declarations will
              be regarded as children of the enum. The only valid
	      child declarations are declarations of constants.

Arguments:    <name>
              Where:
                <name> is a valid Pike identifier. Not the "absolute"
                  name with dots.

Children:     Documentation for the enum, or empty.
Groups with:  -
Examples:
              /*! @enum Flags
               *!   Some flags controlling behavior.
	       */
	      /*! @decl constant FLAG_FLAG = 1
	       */
	      /*! @endenum
	       */

_______________________________________________________________________________

Keyword:      @inherit
Description:  Tell which classes are inherited into this class.
Arguments:    <name>
              Where:
                <name> is an "absolute" name with identifiers
                  separated by dots.  It can also be prefixed by
                  'scope::' where scope is one of the valid scope
                  modules.
Children:     -
Groups with:  -
Examples:
              //! @class XHTML
              //! @inherit XML

_______________________________________________________________________________

Keyword:      @module
Description:  Declare and enter a new scope for a module. Only in C
              mode. Until an @endmodule is found, all declarations
              will be regarded as children of the module.
Arguments:    <name>
              Where:
                <name> is a valid Pike identifier. Not the "absolute"
                  name with dots.
Children:     Documentation for the module, or empty.
Groups with:  -
Examples:
              /*! @module Kenny
               *!  A module with a Norwegian name. */

_______________________________________________________________________________

Keyword:      @namespace
Description:  Declare and enter a new namespace. Only in C mode. Until
              an @endnamespace is found, all declarations will be
              regarded as living in this namespace.
Arguments:    <name>[::]
              Where:
                <name> is a valid Pike identifier. Not the "absolute"
                  name with dots.
Children:     Documentation for symbols in the namespace, or empty.
Groups with:  -
Examples:
              /*! @namespace lfun::
               *!   The operator callback API.
	       */

_______________________________________________________________________________
===============================================================================

  DELIMITER KEYWORDS AT THE TOP LEVEL

===============================================================================

Keyword:      @bugs
Description:  Document shortcomings of the current block
              module/class/function
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:
              @bugs
                Converted images with bigger size than 512x512 pixels
                will be distorted in the corners.

XML:          <bugs/>
_______________________________________________________________________________

Keyword:      @copyright
Description:  Inform about implementor(s) and/or license.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:     //! @copyright
              //!  Licenced under single-clause BSD.

XML:          <copyright/>
_______________________________________________________________________________

Keyword:      @deprecated
Description:  Documents the fact that the entity is deprecated by one
              or several other classes/modules/methods/variables.
Arguments:    [item_1 [, item_2 [, item_3 ... ]]]
                Where:
                  [item_n] is an "absolute" name pointing to a Pike
                    entity. It may use the 'scope::' prefix.
Children:     -
Groups with:  @deprecated
Examples:
              //! @deprecated IO.initPrinter, IO.sendPrinterCommand
              //! @deprecated predef::search

XML:          `@deprecated Foo, Bar' => 
              <deprecated>
                <name>Foo</name>
                <name>Bar</name>
              </deprecated>
_______________________________________________________________________________

Keyword:      @example
Description:  Example code for the documented item.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:
              @example
                array a = func();
                if (sizeof(a) > MAX)      // security check
                  exit(1);

XML:          <example/>
_______________________________________________________________________________

Keyword:      @fixme
Description:  Note about something that needs fixing in the manual.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:
              @fixme
                The return values of this function is not correctly
                documented.
XML:          <fixme/>
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Keyword:      @note
Description:  Important information about the documented item.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:
              @note
                Do not call this function unless you know what you are
                doing.  No bounds/sanity checking on arguments is
                performed!

XML:          <note/>
_______________________________________________________________________________

Keyword:      @param
Description:  Documentation for a method parameter. Only allowed when
              documenting functions.
Arguments:    <name>
              Where:
                <name> is a valid Pike parameter name.
Children:     The documentation for the parameter.
Groups with:  @param
Examples:
              @param x
              @param y
                The coordinates of the thing.
              @param name
                The name of the thing.

XML:          `@param Foo' => 
              <param name="Foo"/>
_______________________________________________________________________________

Keyword:      @returns
Description:  Documentation for the return value of a method. The type
              of the return value is deduced from the declaration.
Arguments:    -
Children:     The doc.
Groups with:  -
Examples:
              @returns
                The square root of the sum of the cubes of the inverse
                numbers.

XML:          <returns/>
_______________________________________________________________________________

Keyword:      @seealso
Description:  Refer to other stuff that is related to the entity in
              question.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:     //! @seealso
              //!  @[calc_checksum_w()] is used for wide strings.

XML:          <seealso/>
_______________________________________________________________________________

Keyword:      @thanks
Description:  Inform about people and/or organisations that have helped
	      with the implementation.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:     //! @thanks
              //!  Thanks to Lysator Academic Computer Society for
	      //!  providing computer resources for testing this.

XML:          <thanks/>
_______________________________________________________________________________

Keyword:      @throws
Description:  Describes the conditions for an exception to be thrown
              from the function.
Arguments:    -
Children:     Text (with markup).
Groups with:  -
Examples:     //! @throws
              //!   Throws an exception if the file could not be created.

XML:          <throws/>
_______________________________________________________________________________
===============================================================================

  TEXT MARKUP KEYWORDS

===============================================================================

Keyword:      @array - @endarray
Description:  Documentation of the layout of an array.
Arguments:    [name]
Children:     @elem
Groups with:  -
Examples:     @array
                @elem mixed 0..
                  All elements are of type mixed.
              @endarray

XML:          `@array Foo' =>
              <array name="Foo">
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Keyword:      @b{ ... @}
Description:  Bold.
Children:     Text that will be rendered in bold.
Examples:     You really look @b{bold@}! - You mean @b{bald@}, don't you?

XML:          <b>...</b>
_______________________________________________________________________________

Keyword:      @code ... @endcode
Description:  Encapsulates a code block.
Children:     Text that will be rendered as program code.
Examples:     @code
              int fac(int i) {
                if(i<2) return i;
                return i*fac(i-1);
              }
              @endcode

XML:          <code>...</code>
_______________________________________________________________________________

Keyword:      @dl - @enddl
Description:  Render a definition list.
Arguments:    -
Children:     @item
Groups with:  -
Examples:     @dl
                @item Britta
                  My first teacher. She was very nice.
                @item Boris
                  One of the best tennis players in the universe.
              @enddl

XML:          <dl>
_______________________________________________________________________________

Keyword:      @elem
Description:  Documentation for an array element or a range of array
              elements. Only inside @array - @endarray.
Arguments:    <type> <index range>
              Where:
                <type> is the Pike type of the element at the index.
                <index range> is one of the following:
                  number             (at index number only)
                  number..           (from number to end of array)
                  number1..number2   (from number1 to inclusive number2)
                  ..number           (from beginning to inclusive number)
                And number can be an integer literal or an identifier:
                  4711   -42    MAX
Children:     Documentation for the array elements at the given index or
              indices.
Groups with:  @elem
Examples:     @elem int 0
                The first element is an integer.
              @elem string 1..
                The rest of the elements are strings.
              @elem array(string) MIN..MAX
                The elements at these positions are themselves arrays.

XML:          `@elem string 1..2' => 
              <elem>
                <type><string/></type>
                <minindex>1</minindex>
                <maxindex>2</maxindex>
              </elem>
_______________________________________________________________________________

Keyword:      @expr{ ... @}
Description:  Mark up a code expression.
Children:     Text that will be rendered in a fixed font.
Examples:
              The expression @{i=i++@} is a noop.

XML:          <expr>...</expr>
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Keyword:      @i{ ... @}
Description:  Italics.
Children:     Text that will be rendered in italics.
Examples:     You really look @i{italic@}! - You mean @i{Italian@},
              don't you?

XML:          <i>...</i>
_______________________________________________________________________________

Keyword:      @image{ ... @}
Description:  Insert the specified image.
Children:     The filename of the image file.
Examples:     @image{chart2.png@}

XML:          <image>...</image>
_______________________________________________________________________________

Keyword:      @int - @endint
Description:  Documentation of the different values an integer may
              have.
Arguments:    [name]
Children:     @value
Examples:     @int
                @value 0
                  Ignore all zonks.
                @value 1
                  Transform zonks into flutter.
                @value -1
                  Remove all zonks.
                @value 5..10
                  Do something.
                @value 17..
                  Do something else.
              @endint

_______________________________________________________________________________

Keyword:      @item
Description:  A definition term inside @dl
Arguments:    <name>
              Where:
                <name> is any string that will be the name of the term.
Children:     Text (with markup)
Groups with:  @item
Examples:

XML:          <item name="..."/>
_______________________________________________________________________________

Keyword:      @mapping - @endmapping
Description:  Documentation of the layout of a mapping.
Arguments:    [name]
Children:     @member
Examples:     @mapping
                @member int "ip"
                  The IP# of the host.
                @member string "address"
                  The name of the host.
              @endmapping

XML:          <mapping name="..."/>
_______________________________________________________________________________

Keyword:      @member
Description:  Documentation for a member of a mapping.
              Only inside @mapping - @endmapping.
Arguments:    <type> <index_value>
              Where:
                <type> is the Pike type of the value stored at the index.
                <index_value> is the index value. Can be a string or integer
                  literal, or an identifier.
Children:     -
Groups with:  -
Examples:     @member string "name"
              @member int "age"
                These two entries in the mapping provide personal data.

XML:          `@member float "foo"' => 
              <member>
                <type><float/></type>
                <index>"foo"</index>
              </member>
_______________________________________________________________________________

Keyword:      @mixed - @endmixed
Description:  Documentation of a mixed variable
Arguments:    [name]
Children:     @type
Examples:     @mixed
                @type int
                  Integers will be treated as the Unicode character number.
                @type string
                  Strings are the name of the Unicdoe character.
              @endmixed

XML:          <mixed name="..."/>
_______________________________________________________________________________

Keyword:      @multiset - @endmultiset
Description:  Documentation of the layout of a multiset.
Arguments:    [name]
Children:     @index
Examples:     @multiset
                @index "cat"
                  It's raining cats.
                @index "dog"
                  It's raining dogs
              @endmultiset

XML:          <multiset name="..."/>
_______________________________________________________________________________

Keyword:      @index
Description:  Documentation for a index in a multiset.
              Only inside @multiset - @endmultiset.
Arguments:    <index_value>
              Where:
                <index_value> is the index value. Can be a string or
                  integer literal, or an identifier.
Children:     -
Groups with:  -
Examples:     @index "cat"
              @index "dog"
                If present, these symbols signifies that it is raining
                animals.

XML:          `@index "foo"' =>
                <index>"foo"</index>
_______________________________________________________________________________

Keyword:      @ol - @endol
Description:  Creates an ordered list.
Children:     @item
Groups with:  -
Examples:     @ol
                @item
                  Open the door
                @item
                  Walk through
                @item
                  Close the door
              @endol

XML:          <ol>...</ol>
_______________________________________________________________________________

Keyword:      @pre{ ... @}
Description:  Preformatted text.
Children:     Text that will be rendered as is, e.g. whitespaces kept.
Examples:     @pre{
               +----------+------+--------+
               | startbit | data | endbit |
               +----------+------+--------+
              @}

XML:          <pre>...</pre>
_______________________________________________________________________________

Keyword:      @ref{ ... @}
Description:  A reference to a Pike entity. There is also a shortcut
              for this keyword, since it is expected to be so common:
              @[ ... ]
Children:     Text that will be interpreted as a Pike name.
Groups with:  -

Examples:     My favourite class is @ref{Vanilla.Ice.Cream@}, it
              tastes much better than @[Nougat.Glass] or @[`+].

XML:          <ref>...</ref>
_______________________________________________________________________________

Keyword:      @rfc{ ... @}
Description:  Reference to an RFC and optionally a section or appendix.
Children:     RFC number and optionally a colon followed by section number
              or appendix letter.
Groups with:  -

Examples:
              The @[MIME] module implements @rfc{1521@}.

              See @rfc{7540:5.3@} for details about @[ADT.TreeScheduler].

              The list of static headers for HPack is defined in @rfc{7541:A@}.

XML:          <rfc>...</rfc>
_______________________________________________________________________________

Keyword:      @section - @endsection
Description:  Begin a new section in the text. Sections cannot be nested.
Arguments:    <title>
              Where:
		<title> is any text that is the title of the section.
Children:     Text (with markup)
Groups with:  -
Examples:
              @section One - Introduction
                ...
              @endsection
              @section Two - Intrinsics & Details about the Interface
                ...
              @endsection

XML:          <section title=" ... ">
	      The attribute "name" can be used instead of "title", for
	      compatibility.
_______________________________________________________________________________

Keyword:      @string - @endstring
Description:  Documentation of the layout of a mapping.
Arguments:    [name]
Children:     @value
Examples:     @string
                @value "GMT"
                  Greenwich Mean Time
                @value "CET"
                  Central European Time
              @endstring

XML:          <string name=" ... "/>
_______________________________________________________________________________

Keyword:      @sub{ ... @}
Description:  Subscript
Children:     Text that will be rendered in subscript.
Examples:     The variable n@sub{0@} looks mathematical and serious.

XML:          <sub> ... </sub>
_______________________________________________________________________________

Keyword:      @sup{ ... @}
Description:  Superscript
Children:     Text that will be rendered in superscript.
Examples:     This is an O(n@sup{2@}) operation.

XML:          <sup> ... </sup>
_______________________________________________________________________________

Keyword:      @tt{ ... @}
Description:  Teletype.
Children:     Text that will be rendered in teletype.
Examples:     Type @tt{rm -rf *@} to erase several days of work.

XML:          <tt> ... </tt>
_______________________________________________________________________________

Keyword:      @type
Description:  Documentation for a type alternative to mixed.
              Only inside @mixed - @endmixed.
Arguments:    <type>
Children:     -
Groups with:  -
Examples:     @type int
              @type float
                If the argument is int or float the function will wait
                that many seconds.

XML:          `@type int' =>
                <type><int/></type>
_______________________________________________________________________________

Keyword:      @ul - @endul
Description:  Creates an unordered list.
Children:     @item
Groups with:  -
Examples:     @ul
                @item
                  2 oz light rum
                @item
                  Juice of ½ lime
                @item
                  Coca Cola
              @endul

XML:          <ul>...</ul>
_______________________________________________________________________________

Keyword:      @url{ ... @}
Children:     Text with markup.
Note:         Might be deprecated, since it isn't used...
_______________________________________________________________________________

Keyword:      @xml{ ... @}
Description:  XML escape. Inside this tag the characters <>& are not
              quoted and this makes it possible to insert raw
              XML. Note that the usual rules apply to @ and that
              @i{...@}-style tags can be used inside.
Children:     Text with markup.
Examples:     @xml{<b>Bold</b> and @i{italic@}@}

XML:          No representation.
_______________________________________________________________________________

Keyword:      @ignore - @endignore
Description:  Ignores the block of code enclosed between the two
              keywords. Useful for code that the AutoDoc parser cannot
              understand.
Children:     -
Examples:     @ignore
                array PROXY(_indices, ::_indices());
                array PROXY(_values, ::_values());
              @endignore
_______________________________________________________________________________
