============================================================================
=---__-----__---_____---  ___----____--__------__---__------- _---______---=
=--|  \---|  |-|  _  \-- / _ \--|  _ \-\ \----/ /--/ /-------| | /   ___|--=
=--|   \--|  |-| |-\  \-| /-\ |-| |-\ \-\ \--/ /--/ /--------| |-|  /___---=
=--|    \-|  |-| |_/  /-| |-| |-| |--\ \-\ \/ /--/ /_-----___| |-|  ____|--=
=--|     \|  |-|     /--| |-| |-| |--| |--\  /--/ __ \---/ __  |-|  |------=
=--|  |\     |-|  _  \--| |-| |-| |--| |--|  |-| /--\ \-| /--| |-|  |------=
=--|  |-\    |-| |-\  \-| |-| |-| |--/ /--|  |-| |--| |-| |--| |-|  |------=
=--|  |--\   |-| |_/  /-| \_/ |-| |_/ /---|  |-| \__/ /-| \__| |-|  |------=
=--|__|---\__|-|_____/---\___/--|____/----|__|--\____/---\____/--|__|------=
=--------------------------------------------------------------------------=
============================================================================

NBODY6df v1.0 - 16/02/2017

NBODY6df is an extension of Sverre Aarseth's GPU-parallel direct summation
code, NBODY6. The module implements a thoroughly tested semi-analytic model
of dynamical friction, allowing the user to include the drag force induced
on a massive body when orbiting a spherical, isotropic galaxy model.
(See Petts et al 2015 & 2016).

The documentation can be found in NBODY6df.pdf.

The software is available under an open source MIT liscence.