WIP

Author: pacesm

docs/index.rst

@@ -3,8 +3,20 @@
    You can adapt this file completely to your liking, but it should at least
    contain the root `toctree` directive.
 
-Welcome to MagneticModel's documentation!
-=========================================
+Welcome to eoxmagmod documentation!
+===================================
+
+The ``eoxmagmod``_ library collects low-level subroutines employed
+by the `VirES for Swarm`_ service to calculate:
+
+- geomagnetic models (Spherical Harmonic expansion)
+- magnetic coordinates (quasi-dipole and dipole latitude and longitude, magnetic local time)
+- coordinate system conversions (geodetic, geocentric spherical, geocentric Cartesian coordinates)
+- time conversions (modified Julian date 2000, decimal year)
+- and perform other auxiliary calculations.
+
+.. _VirES for Swarm: https://vires.service
+.. _eoxmagmod: https://vires.service
 
 .. toctree::
    :maxdepth: 2