# Contributor Glossary¶

Someone who adds more layers to QGreenland by configuring pipeline(s) to transform source data in to a standard QGreenland specification.

## Pipeline¶

A chain of steps to build a QGIS Layer.

## Step¶

A unit of work for transforming a layer. Must be a Linux shell command (e.g. gdalwarp or ogr2ogr).

## Boundary¶

Instead of extent, which to some may imply rectangular or lon/lat-based shape, use the term “Boundary”.

You can define as many boundaries as you want with arbitrary names, in addition to the required data boundary, which is used for defining the initial extent shown when opening QGIS.