# Add / map / remove columns

> For the complete documentation index, see [llms.txt](https://kotlin.github.io/dataframe/llms.txt).

* [add](add.html) columns to [DataFrame](dataframe.html)

* [map](map.html) columns to new [DataFrame](dataframe.html), [DataColumn](datacolumn.html) or `List`

* [remove](remove.html) columns from [DataFrame](dataframe.html)