add/ref: update documentation.

src/content/entries/astro-wikibonsai.md

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+---
+title: Astro-WikiBonsai
+date: '2023-10-04'
+---
+
+Welcome to Astro-WikiBonsai.
+
+It's a [[digital-garden]], whose defining feature are [[wikirefs]] (aka "bidirectional link"). These are links using the `[[double-square-bracket]]` syntax that link to files or pages within a collection of markdown files. They can be used in any and all markdown files across the site, though unique filenames are required.
+
+[[wikibonsai]] style gardens in particular add a [[semantic-tree]], which is viewable as a sort of #tag tree called the [map-page](/map). It is built from [[index-type|index files]] whose content defines its structure using markdown lists and `[[wikirefs]]`. The files linked in the semantic tree are primarily [[entry-type|entries]] which act as concept summaries, much like a Wikipedia page. Each entry also displays back references, such as which posts link to those entries.
+
+These syntaxes and workflows aim to make large amounts of content more easily navigable without the need for algorithms and opaque search mechanisms (though those are also generally readily accessible).