> For the complete documentation index, see [llms.txt](https://attr.sygnal.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://attr.sygnal.com/sa5-calc/article-1/source-types.md).

# Source Types

## Field Source Type 

The purpose of a field source 

#### wfu-calc-source-type = field 

The name of the field to use, as tagged with `wfu-calc-field` 

e.g. `blog` would match all items which have `wfu-calc-field` = `blog`   

## Selector Source Type 

#### wfu-calc-source-type = selector 

Any valid [CSS selector](https://developer.mozilla.org/en-US/docs/Web/CSS/CSS_selectors) for identifying the unique elements we want.

e.g. \[my-type=foo]  

## Sitemap Source Type 

#### wfu-calc-source-type = sitemap 

The path prefix to match, e.g. `/blog/` 

e.g. `/blog/` would count all items with the path beginning with `/blog/`.