.. SPDX-FileCopyrightText: 2026 James Turner <james@flightgear.org>
.. SPDX-License-Identifier: GPL-2.0-or-later

Property Reference
==================

This page documents the FlightGear property tree nodes referenced
throughout this documentation. A :ref:`fgprop-propindex` lists all entries
alphabetically.

New properties can be documented using the ``.. fgprop:property::`` directive.
Use ``:fgprop:ref:\`/path/to/property\``` to cross-reference a documented
property from elsewhere in the documentation.

.. rubric:: Simulation

.. fgprop:property:: /sim/fg-home

   The path to the FlightGear home directory where user settings, logs and
   add-on data are stored. Derived from the :envvar:`FG_HOME` environment
   variable when set.

.. fgprop:property:: /sim/input/long-press-sec

    The default duration in seconds for a long-press event.

.. fgprop:property:: /sim/input/double-press-sec

    The default duration in seconds between presses for a double-press event.

:ref:`fgprop-propindex`