Important to be aware though that the refresh performance is of necessity 
rather slow when using this new attribute, so I would not suggest using it 
with larger numbers of tiddlers or complex templates where performance is a 
concern. 

For a small list like the one posted as an example in this thread, the 
performance different should be negligible.

On Saturday, April 24, 2021 at 5:22:40 PM UTC+2 Mohammad wrote:

> You may now, the $list widget, is the most common widget you use in 
> Tiddlywiki! It is everywhere like a nice dog!
>
> The $list widget in 5.1.24 has got a new attribute index! in which the 
> numeric index of each listed tiddler is stored  It can produce very nice 
> results like below
>
>
> <$list filter="[tag[About]sort[title]]" index="index">
> <div>
> <<index>>: ''<$text text=<<currentTiddler>>/>'' (is first: <<index-first>>, 
> is last: <<index-last>>)
> </div>
> </$list>
>
>
>
> Displays as:
>
> 0: Acknowledgements (is first: yes, is last: no)
> 1: Contributors (is first: no, is last: no)
> 2: History of TiddlyWiki (is first: no, is last: no)
> 3: License (is first: no, is last: no)
> 4: Releases (is first: no, is last: no)
> 5: RoadMap (is first: no, is last: yes)
>
> Ah this is lovely!
>
>
>
>
> Best wishes
> Mohammad
>

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