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RE: [dita] rich topic with nested divisions

From
Esrig, Bruce (Bruce) <>
Date
2005-11-07T20:27:36+00:00
ID
Thread
RE: [dita] rich topic with nested divisions
Continuing this proposal, would we have 
...

 

- a 
rich topic (called <article> in Michael's posting) that allows more 
nesting than <topic> allows.

- 
<topic> as a possible direct member of the rich topic

- 
<division> as a nestable organizer (depth zero-or-more) of topics within 
the rich topic

- the 
ability to connect from <map> to rich topics

- the 
ability to specialize <topic> as before

- 
therefore, the ability (by using a rich topic) to encode a complex topic 
containing its own background information

- a 
natural separation between the content level (in the rich topic) and the 
reuse/rearrangement level (in the map)

 

This 
preserves the DITA perspective that a topic is a really small chunk, while 
permitting DITA to be used to encode larger chunks.

 

To 
support this fully would mean agreeing to a policy that requires parallel 
support for topics and rich topics. If a facility would make sense with both, 
then it should be defined for both.

 

Best 
wishes,

 

Bruce 
Esrig

  
-----Original Message-----
From: Michael Priestley 
  [mailto:]
Sent: Monday, November 07, 2005 11:24 
  AM
To: Paul Prescod
Cc: 
  
Subject: Re: [dita] Two proposals for 
  nested sections

Paul, 
  

Another alternative is to create an additional base type at the 
  same level as topic that allows nested divisions. That way we don't affect the 
  integrity of the topic architecture, but we give you the ability to design 
  content with nested subheadings within the overall DITA 
  architecture. 

I'm thinking this would be conceptually something 
  like an article or whitepaper - longer than a topic, may contain topics, but 
  not in itself a topic. Note that we have been authoring articles in DITA just 
  using nested topics (there are examples in the toolkit), and that will 
  continue to be valid as well. 
  

So: 

<article 
  id="xyz"> 
       <title>A longer 
  piece of content</title> 
  
      
   <shortdesc>We still have the same general DITA structure of a 
  title, shortdesc, and body</shortdesc> 
  
       <articlebody> 
        
         <p>But we have one very important difference: 
  instead of sections, we have divisions, and we allow them to 
  nest.</p> 
              
   <division> 
              
          
   <title>Divisions</title> 
        
                 <p>Divisions have 
  a minimal structure consisting of an optional title followed by block-level 
  content. They are not addressable directly by maps in the way articles or 
  topics are, so in that respect they are more like sections, except that they 
  nest.</p> 
              
           <topic id="abc"> 
  
                        
         <title>Topics</title> 
  
                        
         <body> 
        
                        
           <p>We also allow topics to be authored 
  inside the body of the article, or pulled in via conref, so that articles can 
  still contain and reuse topics. So articles can still consume topics, even 
  though topics (being smaller) cannot consume articles.</p> 
  
                        
         </body> 
        
                
   </topic> 
              
   </division> 
  
      
   </articlebody> 
  
      
   <related-links><link 
  href="somewhereelse.dita"/></related-links> 
  
       <article id="nestedarticle"> 
  
               <title>A 
  subarticle</title> 
  
          
       <shortdesc>We could even allow articles to nest, 
  after the body - keeping articles separate from articles in the same way we 
  keep topics separate from topics, that is by separating their content into 
  different bodies.</shortdesc> 
  
          
       <articlebody><p>And so 
  on...</p></articlebody> 
  
      
   </article> 
</article> 
        
          
Michael 
  Priestley
IBM DITA Architect
SWG Classification Schema PDT 
  Lead
 

  
    
    

      "Paul Prescod" 
        <> 
        
11/06/2005 08:51 PM 

      
        
          
          

            
              
To

            <> 
          

            
              
cc

            
          

            
              
Subject

            [dita] Two proposals 
              for nested sections

        
          
          

            
            

Since your concern is preventing arbitrary nesting of 
  narrative
documents, two solutions present themselves: 

1. Limit the 
  nesting levels to some agreeable level that is "enough
levels" to satisfy 
  most customers wanting grouping and "not so many
levels" as to support 
  arbitrary narrative. This is truly a compromise in
the sense that neither 
  party walks away comfortable that their concerns
are addressed in the 
  general case. This can be easily achieved in a DTD
with e.g. "subsection" 
  and "subsubsection" elements.

2. Limit the nesting in the out-of-box 
  DITA using formally declared
constraints or prose. In addition, provide a 
  mechanism whereby a
knowledgable specializer can loosen the constraint for 
  their
specialization (not, typically, to allow indefinite nesting, but 
  rather
to allow the creation of grouping elements in the specialization). 
  The
specification can outline the dangers of this loosening and 
  the
situations under which we believe it is a good thing. If we can 
  agree
that these specializers are (in general) knowledgable and 
  trustworthy
then both parties achieve their goal.

Paul 
  Prescod
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