# Tutorial

A simple tutorial that adds two new columns and a column filter is available in the form of the `org.polarsys.kitalpha.massactions.tutorial` plugin.

In order to test it, you need to add two new extensions for the `TutorialColumnProvider` and the `TutorialColumnFilter` classes.

## The Column Provider

This column provider adds two new columns. The `TextColumn` is a simple textual column that displays a string message that the user can modify. The `CountColumn` displays a composite that when clicked circles through all the letters of the alphabet.

## The Column Filter

This column filter enables a new column configuration that displays only the two new added columns.