Takes a string and sanitizes it the same way as the [`defaultMarkdownHandler`](/getting-started/configuration-markup#configure-markup) does for markdown headers.
Since the defaultMarkdownHandler and this template function use the same sanitizing logic, you can use the latter to determine the ID of a header for linking with anchor tags.
{{anchorize"This is a header"}} → "this-is-a-header"
{{anchorize"This is also a header"}} → "this-is-also----a-header"
{{anchorize"main.go"}} → "maingo"
{{anchorize"Article 123"}} → "article-123"
{{anchorize"<- Let's try this, shall we?"}} → "--lets-try-this-shall-we"
{{anchorize"Hello, 世界"}} → "hello-世界"