Add docs

docs/guide/html-template/search.md

@@ -7,11 +7,27 @@ Emanote provides client-side full-text search using [Stork](https://stork-search
 
 You can trigger search input in one of the following ways:
 
-- Press `Ctrl+K` (or `⌘K` on macOS). 
+- Press `Ctrl+K` (or `⌘K` on macOS).
 - Click the lens icon on the sidebar (if using the 'book' [[html-template|template layout]]) or top-right corner (if using [[neuron-layout]]).
 
+## Including frontmatter content in the search
+
+By default, Stork doesn't include the text in the frontmatter as searchable.
+
+This can be changed by adding the following to `index.yaml`:
+
+```yaml
+emanote:
+  stork:
+    frontmatter-handling: ignore
+```
+
+This allows you to search by the tags present in the frontmatter, but you will also get potentially undesired results when searching words like `order` or `date`.
+
+The possible values are `ignore`, `omit` and `parse`. Default `omit`. See the Stork [docs](https://stork-search.net/docs/config-ref#frontmatter_handling).
+
 ## Known issues
 
 - In live server mode, you may find that the browser will fetch remote assets (the wasm file) from files.stork-search.net. See details [here](https://github.com/jameslittle230/stork/issues/317#issuecomment-1258682222).
 
-[^1]: The Stork index file can be accessed at [`-/stork.st`](-/stork.st). 
+[^1]: The Stork index file can be accessed at [`-/stork.st`](-/stork.st).