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diff --git a/Documentation/environment_variables.rst b/Documentation/environment_variables.rst
index 4e9fbb27..7da9883a 100644
--- a/Documentation/environment_variables.rst
+++ b/Documentation/environment_variables.rst
@@ -1,5 +1,7 @@
.. SPDX-License-Identifier: CC-BY-SA-4.0
+.. include:: documentation-contents.rst
+
Environment variables
=====================
@@ -37,6 +39,11 @@ LIBCAMERA_IPA_MODULE_PATH
Example value: ``${HOME}/.libcamera/lib:/opt/libcamera/vendor/lib``
+LIBCAMERA_IPA_PROXY_PATH
+ Define custom full path for a proxy worker for a given executable name.
+
+ Example value: ``${HOME}/.libcamera/proxy/worker:/opt/libcamera/vendor/proxy/worker``
+
LIBCAMERA_PIPELINES_MATCH_LIST
Define an ordered list of pipeline names to be used to match the media
devices in the system. The pipeline handler names used to populate the
@@ -50,6 +57,11 @@ LIBCAMERA_RPI_CONFIG_FILE
Example value: ``/usr/local/share/libcamera/pipeline/rpi/vc4/minimal_mem.yaml``
+LIBCAMERA_RPI_TUNING_FILE
+ Define a custom JSON tuning file to use in the Raspberry Pi.
+
+ Example value: ``/usr/local/share/libcamera/ipa/rpi/vc4/custom_sensor.json``
+
Further details
---------------