# README file for the GAP package Origami

This package provides calculations for origamis, also called square-tiled surfaces. These are translation surfaces, obtained by gluing the edges of squares. These surfaces can equivalently be described as coverings of a torus.
This package calcultates basic properties of origamis, such as stratum and genus. The main feature of the package is the calculation of Veech groups of origamis.

## Using the package

Copy the package in the pkg directory of your GAP directory. Then start GAP and enter:

```GAP
LoadPackage( "Origami" );
```

## Needed packages

You need the following GAP packages, to use this package:

- ModularGroup Version 2.0.1 (https://AG-Weitze-Schmithusen.github.io/ModularGroup/)

- Orb Version 4.7.6 (this is a standard package)