
   Architecture: CSS Structure
_______________________________________________________________________________

It's important to understand the internal HTML file structure and styles in order to design your own CSS style for Natural Docs.  If
you're content with the default styles, there's no need to read this document.

Topic: Diagram Conventions

    The diagrams are designed for clarity.  In the actual HTML, you'd obviously see "<pre class=CCode></pre>" instead of
    "<pre CCode></pre CCode>".

    - A tag with just a style, for example "CTitle", means an unspecified element with that class.  Style with .CTitle.
    - A tag that includes a #, for example "#Menu", means an unspecified element with that ID.  Style with #Menu.
    - A tag that includes a HTML element as well, for example "pre CCode", means it will always be that element.  You can style with
      either .CCode or pre.CCode.
    - A tag that has an "or" in it, for example "#Content or #Index", is just shorthand for either of those elements.  The diagram
      applies to both of them but only one will actually appear at a time in the output.
    - A tag that has an "and" in it, for example "CType and CTopic", means that both styles will apply to the same element.  You can
      style it with .CType.CTopic, noting that the space between them must be omitted.
    - A tag or style with a question mark means that tag or style will only be there in certain situations.


Topic: Page Structure

    The body tag is used to distinguish between the types of pages.  For framed pages, its style will be <#FramedMenuPage>,
    <#FramedContentPage>, or <#FramedIndexPage> depending on what it is.  Non-framed pages have a body style of
    <#UnframedPage>.

    Unframed Page:

        (start diagram)

        <body #UnframedPage>
        [browser styles]

            <#Menu>
                Menu
            </#Menu>

            <#Content or #Index>
                Content or Index
            </#Content or #Index>

            <#Footer>
                Footer
            </#Footer>

        [/browser styles]
        </body #UnframedPage>

        (end diagram)

    Framed Menu Page:

        (start diagram)

        <body #FramedMenuPage>
        [browser styles]

            <#Menu>
                Menu
            </#Menu>

            <#Footer>
                Footer
            </#Footer>

        [/browser styles]
        </body #FramedMenuPage>

        (end diagram)

    Framed Content/Index Page:

        (start diagram)

            <body #FramedContentPage or #FramedIndexPage>
            [browser styles]

                <#Content or #Index>
                    Content or Index
                </#Content or #Index>

            [/browser styles]
            </body #FramedContentPage or #FramedIndexPage>

        (end diagram)


Styles: Page Styles

    #UnframedPage - An unframed page.  Will be applied to a body tag.

    #FramedMenuPage - A framed menu page.  Will be applied to a body tag.
    #FramedContentPage - A framed content page.  Will be applied to a body tag.
    #FramedIndexPage - A framed index page.  Will be applied to a body tag.

    #Footer - The page footer.  Will be in a framed menu page or on its own in a non-framed page.

    See Also:

        - <#Content>
        - <#Menu>
        - <#Index>
        - <#Footer>


Styles: Browser Styles

    Natural Docs pages include JavaScript to detect which browser the user is running and apply styles so that you can work
    around browser quirks right in the CSS file.

    Immediately after the body tag, the browser type and version styles will be applied.  However, neither are guaranteed to be
    there; the user may have JavaScript turned off or be using a browser that isn't detected.  These styles should only be used to
    correct minor flaws and should not be heavily relied on.

    >   <body>
    >
    >       <#Browser Type>?
    >           <#Browser Version>?
    >
    >              Page Content
    >
    >           </#Browser Version>?
    >       </#BrowserType>?
    >
    >   </body>

    For example, if a <CTopic>'s style is giving you problems in Internet Explorer 5, override it with #IE5 .CTopic.  If a <MTitle>'s
    style gives you a problem in Opera 5 but only in frames, override it with #FramedMenuPage #Opera5 .MTitle.

    Browser Types:

        If the browser is not one of the types below, neither this nor the browser version will be present.  There's the possibility that
        some obscure browser will appear as one of the others by spoofing, but the most prominent of these, Opera, Konquerer, and
        Safari, are taken care of.

        #IE - Internet Explorer
        #Firefox - Firefox and anything else based on the Gecko rendering engine.
        #Opera - Opera
        #KHTML - The KHTML rendering engine, which includes Konqueror and Safari.

    Browser Versions:

        If the browser is not one of the versions below, this style will not be present.  The browser type still may be.  Gecko and
        KHTML-based browsers are not broken out into sub-versions.

        #IE5 - Internet Explorer 5.x.
        #IE6 - Internet Explorer 6.x.
        #IE7 - Internet Explorer 7.x.

        #Opera5 - Opera 5.x.
        #Opera6 - Opera 6.x.
        #Opera7 - Opera 7.x.
        #Opera8 - Opera 8.x.
        #Opera9 - Opera 9.x.

        #Firefox1 - Firefox 1.0.x and anything else based on Gecko 1.7.x.
        #Firefox15 - Firefox 1.5.x and anything else based on Gecko 1.8.x.



Topic: Content Structure

    All the topics of a given file is contained in a <#Content>.  Combine with <#UnframedPage> or <#FramedContentPage> to
    distinguish between framed and unframed output styles.  All other content styles are prefixed with a C.

    Each piece of content is a <CTopic> and its type; for example, <CFunction> for a function.  Inside that are the <CTitle> and if
    necessary, <CBody>.  Inside <CBody> are analogues to all the top-level <NDMarkup> tags: <CHeading>, <CParagraph>, etc.
    Styles like <CParagraph> exist so that you only style explicit <NDMarkup> paragraphs, not any p that appears.

    In addition to the top-level <NDMarkup> tags, you also have <Prototype>, <CTitle>, and <Summaries>.  <Summaries> are
    described in their own section.

    (start diagram)

    <#Content>

        <CType and CTopic>

            <CTitle>
                Topic title
            </CTitle>

            <CBody>

                <ClassHierarchy> (See it's section)

                <Prototype> (See it's section)

                <p CParagraph>
                     Paragraph
                </p CParagraph>

                <CHeading>
                    Heading
                </CHeading>

                <pre CCode>
                    Code
                </pre CCode>

                <ul CBulletList>
                    <li>
                    Bullet item
                    </li>
                </ul CBulletList>

                <CInlineImage>
                    <img>
                </CInlineImage>

                <a CImageLink>
                    text
                </a CImageLink>

                <table CDescriptionList>
                    <tr>
                        <td CDLEntry>
                            Entry
                        </td CDLEntry>
                        <td CDLDescription>
                            Description
                        </td CDLDescription>
                    </tr>
                </table CDescriptionList>

                <Summary> (See it's section)

           </CBody>


       </CType and CTopic>

    </#Content>

    (end diagram)

    Take advantange of the CSS inheritance model.  For example, you can style all titles via .CTitle, and you can style
    specific titles with .CType .CTitle.  Note that for merged items you must omit the space, so it would be .CType .CTitle but
    .CType.CTopic.


Styles: Content Styles

    #Content - Parent element containing all topics.

    CTopic - An individual topic.

    CTitle - The title of a topic.
    CBody - The body of a topic.  May not exist.
    CParagraph - A paragraph.  Is implemented with a p.
    CHeading - A heading.
    CBulletList - A bullet list.  Is implemented with a ul.
    CCode - A section of code.  Is implemented with a pre.
    CInlineImage - Surrounds an inline image.
    CImageLink - Surrounds a link to an image.

    CDescriptionList - A description list, which is the type of list you're reading right now.  Is implemented with a table.
    CDLEntry - A description list entry, which is the left side.
    CDLDescription - A description list description, which is the right side.

    #MainTopic - The ID given to the main topic, which is the first in the file.  It is applied to the topic type tag, such as <CClass>
                        and <CFunction>.

    CType - A placeholder for all type-specific styles.  The actual styles will be C followed by the alphanumeric-only topic type name.
                So the CType of a "PL/SQL Function" topic will actually be CPLSQLFunction.


Topic: Menu Structure

    Everything is enclosed in a <#Menu>.  Combine with <#UnframedPage> or <#FramedMenuPage> to distinguish between
    framed and unframed output styles.  All other menu styles are prefixed with an M.

    The title is an <#MTitle> and will always be at the beginning of the menu if it exists.  If a subtitle exists as well, it will appear
    as an <#MSubTitle> inside <#MTitle>.  Subtitles aren't allowed without titles.  Every other entry in the menu is contained in a
    <MEntry> and <MType>, inside of which is the content.  With <MGroups>, there's also a section inside called <MGroupContent>
    which can contain more entries.  Here's the diagram:

    (start diagram)

    <#Menu>

        <#MTitle>
            Menu title

            <#MSubTitle>
                Menu sub title
            </#MSubTitle>

        </#MTitle>

        <MFile and MEntry (and #MSelected?)>
            <a href>File</a href>
        </MFile and MEntry (and #MSelected?)>

        <MIndex and MEntry (and #MSelected?)>
            <a href>Index</a href>
        </MIndex and MEntry (and #MSelected?)>

        <MText and MEntry>
            Text
        </MText and MEntry>

        <MLink and MEntry>
            <a href>Link</a href>
        </MLink and MEntry>

        <MGroup and MEntry>
            <a href>Group</a href>
            <MGroupContent>

                (MEntries)

           </MGroupContent>
        </MGroup and MEntry>

        <#MSearchPanel and MSearchPanelActive/Inactive>
            <input #MSeachField>
            <select #MSearchType>
                <option #MSearchEverything>
                <option>
                <option>
            </select #MSearchType>
        </#MSearchPanel and MSearchPanelActive/Inactive>

        <#MSearchResultsWindow>

            <#MSearchResults>
                <iframe>
            </#MSearchResults>

            <a #MSearchResultsWindowClose>

        </#MSearchResultsWindow>

    </#Menu>

    (end)

    The <MFile> or <MIndex> entry that's currently selected will have the <#MSelected> ID, so you can reference it in CSS via
    .MFile#MSelected.

    The search panel is has its own ID, <#MSearchPanel>, but also has one of the classes <MSearchPanelActive> or
    <MSearchPanelInactive> depending on whether any of the controls are selected or the results window is open.
    <#MResultsWindow> is separate because it may be floating.


Styles: Menu Styles

    #Menu - Parent element containing the entire menu.

    #MTitle - The title of the menu.
    #MSubTitle - The subtitle of the menu.  Will appear within <#MTitle>.

    MEntry - The parent container of <MFile> and <MGroup> entries.

    MFile - A file entry.
    MGroup - A group entry.
    MGroupContent - A container for a <MGroup's> content.
    MText - A plain text entry.
    MLink - An external link entry.
    MIndex - An index entry.

    #MSelected - The ID of the currently selected <MFile> or <MIndex>.

    MType - <MFile>, <MGroup>, <MText>, <MLink>, or <MIndex>.

    #MSearchPanel - Contains all the search controls.
    MSearchPanelActive - Applied to <#MSearchPanel> when any of the controls are selected or the results window is open.
    MSearchPanelInactive - Applied to <#MSearchPanel> when not in use.

    #MSearchField - The text input field of the search panel.
    #MSearchType - The drop down type selector of the search panel.
    #MSearchEverything - The <#MSearchType> option for the Everything index.

    #MSearchResultsWindow - Contains all the search results elements.
    #MSearchResults - Contains the iframe that will hold the results.
    #MSearchRseultsWindowClose - The link to manually close the search results window.


Topic: Class Hierarchy Structure

    Everything is contained in a single <ClassHierarchy>.  Each entry is surrounded by its type, such as <CHParent>, and the
    generic <CHEntry>.  Entries are also surrounded by <CHIndent#s> to provide the level, even if that level is zero.

    (start diagram)

    <ClassHierarchy>

        <CHIndent#>

            <CHType and CHEntry>

                <a href>?
                    Entry
                </a href>

            </CHType and CHEntry>

        </CHIndent#>

    </ClassHierarchy>

    (end diagram)


Styles: Class Hierarchy Styles

    ClassHierarchy - The topmost style containing everything.

    CHEntry - A generic class entry.

    CHParent - The style for a parent class.
    CHCurrent - The style for the current class, which is the one the hierarchy is generated for.
    CHChild - The style for a child class.
    CHChildNote - The style for when a child is added that just shows how many other children were omitted.

    CHIndent# - A style used to indent a level.  Will actually be CHIndent0, CHIndent1, CHIndent2, etc.

    CHType - <CHParent>, <CHCurrent>, <CHChild>, or <CHChildNote>.


Topic: Summary Structure

    Everything is enclosed in a single <Summary>.  All the other summary styles are prefixed with an S.

    <STitle> holds the actual word "Summary" and <SBody> and <STable> hold the content.  <SBody> exists because different
    browsers apply table padding attributes in different ways.  <STable> exists as a class to separate the main table from any other
    tables that may be necessary.  Here's a diagram:

    >   <Summary>
    >
    >       <STitle>
    >           Title
    >       </STitle>
    >
    >       <SBody>
    >           <table STable>
    >               ...
    >           </table STable>
    >       </SBody>
    >
    >   </Summary>

    On to the table content.

    >   <tr SType and SEntry (and SIndent#?) (and SMarked?)>
    >       <td SEntry>
    >
    >           <a href>Entry</a href>
    >
    >       </td SEntry>
    >       <td SDescription>
    >
    >           Description
    >
    >       </td SDescription>
    >   </tr SType and SEntry (and SIndent#?) (and SMarked?)>

    <SIndent#> exist to allow indenting.  They're necessary because implementing it as nested tables, while structurally cleaner,
    won't allow the desciptions to line up on the right throughout the entire summary.  <SMarked> will be applied on almost every
    other row to allow for tinting to improve readability.

    Use the power of CSS's inheritance rules to specify styles.  For example, to set the style of a group entry, apply it to
    .SGroup .SEntry.  However, you could also apply a style to both the group's entry and description by applying the
    style to .SGroup td.  Or, you could apply a style to all the entries by applying it to .SEntry.  And so on.


Styles: Summary Styles

    Summary - The topmost style containing the entire summary.

    STitle - Contains the summary title, which is the part that actually says "Summary".

    SBody - Surrounds <STable>, since some browsers can't do table padding right.  A hack, I know.
    STable - The actual summary table.  This class separates it from other layout tables that may appear.

    SMarked - A class applied to rows that should have a slightly different color than the rest of the rows to make them easier to
                    read.

    SEntry - The entry (left) side of the table.
    SDescription - The description (right) side of the table.

    SIndent# - Surrounding entries and descriptions that are part of a group and need to be indented.  Actual styles will be
                     SIndent1, SIndent2, etc.

    SType - A placeholder for all topic-specific styles.  The actual styles will be S followed by the alphanumeric-only topic type name.
                So the SType of a "PL/SQL Function" topic will actually be SPLSQLFunction.


Topic: Prototype Structure

    Everything is enclosed in a <Prototype>.  All other styles are prefixed with a P.

    Parameter Type First Style:

        For prototypes such as
        > void Function (unsigned int* a, int b = 0)
        where the types come first.

        (start diagram)

        <table Prototype>

            <td PBeforeParameters>
                "void Function ("
            </td PBeforeParameters>

            <td PTypePrefix>
                "unsigned"
            </td PTypePrefix>

            <td PType>
                "int"
            </td PType>

            <td PParameterPrefix>
                "*"
            </td PParameterPrefix>

            <td PParameter>
                "a", "b"
            </td PParameter>

            <td PDefaultValuePrefix>
                "="
            </td PDefaultValuePrefix>

            <td PDefaultValue>
                "0"
            </td PDefaultValue>

            (repeated as necessary)

            <td PAfterParameters>
                ")"
            </td PAfterParameters>

        </table Prototype>

        (end diagram)


    Parameter Name First Style:

        For prototypes such as
        > function Function (a, b: int; c: int := 0)
        where the parameters come first.

        (start diagram)

        <table Prototype>

            <td PBeforeParameters>
                "function Function ("
            </td PBeforeParameters>

            <td PParameter>
                "a,", "b:", "c:"
            </td PParameter>

            <td PType>
                "int"
            </td PType>

            <td PDefaultValuePrefix>
                ":="
            </td PDefaultValuePrefix>

            <td PDefaultValue>
                "0"
            </td PDefaultValue>

            (repeated as necessary)

            <td PAfterParameters>
                ")"
            </td PAfterParameters>

        </table Prototype>

        (end diagram)


    Note that any section may not exist.  For example, there will be no <PTypePrefix> cells generated if none of the parameters
    have it.


Styles: Prototype Styles

    Prototype - The style encompassing the entire prototype.

    PBeforeParameters - The part of the prototype that comes before the parameters.
    PAfterParameters - The part of the prototype that comes after the parameters.

    PType - The parameter type.
    PTypePrefix - The prefix of a parameter type.
    PParameter - The parameter name.
    PParameterPrefix - The prefix of a parameter name.
    PDefaultValue - The default value expression for a parameter.
    PDefaultValuePrefix - The prefix of the default value expression.


Topic: Link Structure

    All links to symbols have a type style prefixed with L.  The only exceptions are summary entries; summary descriptions use
    them as well.

    >   <a LType>
    >       Link
    >   </a LType>

    You can use this to make links to different symbols appear in different styles.  For example, making .LClass bold will make all
    links to classes bold, except when appearing in summary entries.  You can combine this with other styles to be even more
    specific.  For example, you can apply a style to function links appearing in summary descriptions with .SDescription .LFunction.

Styles: Link Styles

    LType - A placeholder for all topic-specific styles.  The actual styles will be L followed by the alphanumeric-only topic type name.
                So the LType of a "PL/SQL Function" topic will actually be LPLSQLFunction.



Topic: Index Structure

    Everything is enclosed in an <#Index>.  Combine with <#UnframedPage> or <#FramedIndexPage> to distinguish between
    framed and unframed output styles.  All other index styles are prefixed with an I.

    (start diagram)

    <#Index>

        <IPageTitle>
            Page Title
        </IPageTitle>

        <INavigationBar>
            A - <a href>B</a href> - C ...
        </INavigationBar>

        <table>

            <IHeading>
                Heading (A, B, etc.)
            </IHeading>

            <td ISymbolPrefix>
                Prefix, if any
            </td ISymbolPrefix>

            <td IEntry>
                Entry
            </td IEntry>

            ...

        </table>

    </#Index>

    (end diagram)

    Every index entry, including headings, are rows in a table.  The first column of a non-heading are <ISymbolPrefixes> so that
    the non-prefix portions align correctly.  The other column are <IEntries>, of which there are multiple formats, described below.

    (start diagram)

    <a href ISymbol>
        Symbol
    </a href ISymbol>,
    <IParent>
        Class
    </IParent>

    <ISymbol>
        Symbol
    </ISymbol>
    <ISubIndex>
        <a href IParent>
            Class
        </a href IParent>
        ...
    </ISubIndex>

    <ISymbol>
        Symbol
    </ISymbol>
    <ISubIndex>
        <IParent>
            Class
        </IParent>
        <ISubIndex>
            <a href IFile>
                File
            </a href IFile>
            ...
        </ISubIndex>
        ...
    </ISubIndex>

    (end diagram)

    Each part of the entry is surrounded by its type, which may or may not be a link.  If an entry has more than one defining class
    or file,  they're broken out into <ISubIndexes>.

    It's called <IParent> instead of <IClass> because class entries are <ISymbols>.  <IParents> are only used when the symbol
    has a class.  If the symbol _is_ a class, the symbol is global.


Styles: Index Styles

    #Index - Parent element for the entire index.

    IPageTitle - The page title.
    INavigationBar - The navigation bar.

    IHeading - An index heading, such as the letter for the group.

    IEntry - An entry in the index.
    ISymbolPrefix - The stripped prefix of the entry.
    ISymbol - The entry symbol.
    IParent - The entry parent class.  If the entry _is_ a class, this isn't defined because classes are global and don't have parent
                  classes.  This is why it's called IParent instead of IClass; hopefully it's less confusing.
    IFile - The file the entry is defined in.

    ISubIndex - The surrounding block if an entry needs to be broken out into a sub-index.

    #IFirstHeading - The ID of the first <IHeading> to appear in the file.

    #IFirstSymbolPrefix - The ID for the first <ISymbolPrefix> to appear under an <IHeading>.
    #ILastSymbolPrefix - The ID for the last <ISymbolPrefix> to appear under an <IHeading>.
    #IOnlySymbolPrefix - The ID if there is only one <ISymbolPrefix> for an <IHeading>.


Topic: Search Results Structure

    The search results use virtually the same structure and styles as the indexes, except that <#SearchResults> replaces
    <#Index>, there's a new <SRResult> style, and there are a few additional <SRStatus> blocks.

    Visibility:

        Visibility is *very* important to making the search work correctly.  JavaScript will handle most of it, but your CSS needs to
        abide by these rules.

        - <SRStatus> sections are visible by default.
        - <SRResult> sections are *not* visible by default.  They must use display: none.
        - <ISubIndex> should be display: none when under <#SearchResults>.


Styles: Search Results Styles

    #SearchResults - Parent element for the entire page.
    SRStatus - Status message.  Must be visible by default.
    SRResult - A result.  All you need to do for this class is set it to display: none.  Nothing else should be set on it.



Topic: Tool Tip Structure

    Tool tips may appear anywhere in the page, mainly because it's assumed that they will use position: absolute and
    visibility: hidden.

    The entire tool tip is found in a <CToolTip> style, with a CType style inside it.  CTypes are normally outside their elements, but
    that would cause it to be partially visible in this case.  We need <CToolTip> to be the outermost style so its visibility and
    position can be manipulated in JavaScript.

    Inside there's a <CPrototype> and/or the description text.  The description text has no special surrounding tags.

    >   <CToolTip>
    >
    >       <CPrototype>
    >           Prototype
    >       </CPrototype>
    >
    >       Summary text
    >
    >   </CToolTip>

Styles: Tool Tip Styles

    CToolTip - Surrounds the entire tool tip.  This *must* have position: absolute and visibility: hidden for the tool tip mechanism
                    to work.

    See also <CPrototype>.


Styles: Miscellaneous Styles

    HB   - Hidden Break.  Will surround a single space to try to break a word transparently.  Should be set to as small as possible.

    blockquote - This HTML element should surround anything that needs to be scrolled if it's too wide, like prototypes and text
                       diagrams.  It's not a style because this makes it much easier to do the JavaScript necessary to get this working
                       in IE.


Group: History

Topic: Revisions

    How the page structure has changed throughout the various releases.

    2.0:

        - Added <#Menu>, <#Content>, <#Footer>, and <#Index>.  They were previously shown in the diagrams as classes but did
          not actually appear in the generated output.
        - The following become IDs instead of classes: <#UnframedPage>, <#FramedMenuPage>, <#FramedContentPage>,
          <#FramedIndexPage>, <#MTitle>, <#MSubTitle>, all <Browser Styles>.
        - Removed MenuSection, ContentSection, and IndexSection.  Use "<#UnframedPage> <#Menu>" instead.
        - Removed tables from the unframed <Page Structure>.  Use CSS to position the elements instead.
        - The following were merged into single items, so you have to style them with .A.B (no space) instead of .A .B (space):
          <CType> and <CTopic>, <MType> and <MEntry>, <CHType> and <CHEntry>
        - The IE4, Netscape, and Netscape4 styles have been removed.  <#IE7>, <#Opera8>, and <#Opera9> have been added.
          Gecko has been replaced by <#Firefox>, <#Firefox1>, and <#Firefox15>.
        - Removed SEntrySize.  Apply the width to <SEntry> and <SDescription> instead.
        - <SType>, <SEntry>, and <SIndent#> were moved from the td and divs into the tr.
        - CHIndent was replaced by <CHIndent#>.
        - SBorder becomes <SBody>.
        - Added <CInlineImage> and <CImageLink>.
        - Added <#SearchPanel>, <#SearchResultsWindow>, and all related styles.
        - Added <Search Results Structure> and <Search Results Styles>.

    1.33:

        - Added <PDefaultValuePrefix>.

    1.32:

        - <blockquotes> now surround elements that should scroll if they're too wide for the page.

    1.3:

        - Removed CPrototype.  See the replacement <Prototype Structure> and <Prototype Styles>.
        - Removed SInGroup, SInClass, and SInSection in favor of more general <SIndent#>.
        - <CTypes>, <STypes>, and <LTypes> are now completely determined by <Topics.txt> configuration files.
        - <CTypes>, <STypes>, and <LTypes> no longer have separate list types.  A CFunctionList is now just a CFunction.
        - Indexes are now done with tables.
        - ISection was removed.
        - <IEntries> are only used for the entry cell, not for each entry in an <ISubIndex>.
        - Added <ISymbolPrefix>, related IDs, and <#IFirstHeading>.
        - Merged <CType> and <CTopic> into the same element.  Must now be styled with .CType.CTopic (no space) while all
          sub-elements will still be .CType .CElement (with space.)

    1.21:

        - Added <TOPIC_PROPERTY> and TOPIC_PROPERTY_LIST styles, so they get corresponding <CTypes>, <STypes>, and
          <LTypes>.

    1.2:

        - Added <Class Hierarchy Styles> since 1.2 added class hierarchies.

    1.16:

        - Changed the first topic from having a CMain type to having a normal type with a <#MainTopic> ID.

    1.1:

        - Added <Tool Tip Styles>.
        - Renamed HiddenBreak to <HB>.
        - Added <TOPIC_CONSTANT>, TOPIC_CONSTANT_LIST, <TOPIC_TYPE>, and TOPIC_TYPE_LIST types, so they get
          corresponding <CTypes>, <STypes>, and <LTypes>.

    1.0:

        - The <CType> tags now appear arround the <CTopic> tags instead of vice versa.
        - Added a <CBody> tag to surround non-<CTitle> elements.
        - <SMarked> now appears in tr's instead of td's, where it belonged in the first place.

    0.95:

        - Added <Browser Styles>.
        - Redid <Page Structure>, replacing generic styles like Menu with page type styles like UnframedPage/MenuSection and
          FramedMenuPage.

    0.91:

        - Added <LURL> and <LEMail> link styles, since 0.91 added URL and e-mail links.
        - Added <ISection> style, which is better than <IHeading> floating on its own.

    0.9:

        - Added <Index Styles>, since 0.9 added indexes.

