Another usecase for sections can be formula-fields...
<$section title="bar"/>
<$list filter="[let: (fieldA + fieldB) * (1 + fieldC) / 100[]]"/>
<$section>
...so that...
{{foo§§bar}}
...returns some calculated output, thus functionaing like formula fields
either with respect to a tiddler's fields or as rollup-summary-fields with
respect to properties of tagging or listed items or entirely arbitrary
items.
Best wishes, Tobias.
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