> For the complete documentation index, see [llms.txt](https://olddocs.exivity.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://olddocs.exivity.io/data-pipelines/transform/language.md).

# Language

## Syntax

Within the individual reference articles for each statement, the syntax is described using the following conventions:

* **`bold`** for keywords
* *`italics`* for arguments
* Square brackets for optional keywords and arguments `[`**`like`***`this`*`]`
* Vertical pipe for alternative keyword options **`just|exactly`** as shown 
* Ellipses for a variable length list of arguments: *`Column1`* `...` *`ColumnN`* 

Refer to the [core concepts](/advanced/digging-deeper/dataset-lifecycle.md) page for more information regarding datasets, fully qualified column names and related information.