I didn't end up using this, but it was meant as a demo for a [question on 
talk.tiddlywiki.org][qu].  It shows, through a few steps of creating a wiki,
that [tobibeer's `excerpt` macro][ex] does not duplicate the data stored in
the wiki but only renders it multiple times.

This table shows an empty wiki, another one with some Lorem Ipsum tiddlers, 
a third one that adds excerpt macro calls to the text, and a fourth that adds
two tiddlers with lists of excerpts.  There are 17665 bytes displayed in those
two tiddlers, but the wiki size only increases 502 bytes -- the size of two 
fairly simple tiddlers.


| File                          | Size      | Diff    |   
|-------------------------------|-----------|--------:|
| [empty.html][emp]             | 2,558,231 |       - |
| [withExcerptText.html][et]    | 2,574,992 | +16,761 |
| [withExcerptsMarked.html][em] | 2,575,663 |    +671 |
| [withExcerptsShown.html][es]  | 2,576,165 |    +502 |


  
  [em]:  ./withExcerptsMarked.html
  [emp]: ./empty.html
  [es]:  ./withExcerptsShown.html
  [et]:  ./withExcerptText.html
  [ex]:  https://tobibeer.github.io/tb5/#Text%20Excerpts
  [qu]:  https://talk.tiddlywiki.org/t/excerpting-sections-of-text/10507

  <script src="https://cdn.jsdelivr.net/npm/marked/marked.min.js"></script>
  <script src="./md.js"></script>