> For the complete documentation index, see [llms.txt](https://docs.helmut.de/helmut4-releases/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.helmut.de/helmut4-releases/v4.9.1/helmut4-components/streamdesigner/wildcards/string-related-wildcards-9/string-case-to-snake.md).

# String Case To Snake ?

A wildcard that converts a string into snake\_case replaces spaces or other separators with underscores, resulting in a format where words are connected with underscores and all letters are lowercase.

The wildcard is used in the following ways.

* {string.case.to.snake.?}
* For the following input (?) --> This wildcard formats the string like this
* The output is going to be --> This\_wildcard\_formats\_the\_string\_like\_this