Introduction

Groan Selection Language (GSL) is a query language for selecting atoms in the groan_rs crate and in programs built on top of it, such as gorder or gcenter.

The selection language is quite similar to the languages used by VMD and MDAnalysis, so if you are familiar with them, GSL should feel quite intuitive. This guide should help you understand and efficiently use GSL both when working directly with the groan_rs library and when using applications built on top of it.

This document describes the syntax of GSL v0.9 (corresponding to groan_rs v0.9 and v0.10).