diff --git a/doc/manual/sphinx/source/test_items/run_test_item.rst b/doc/manual/sphinx/source/test_items/run_test_item.rst
index 7b71c09..7e0c3f0 100644
--- a/doc/manual/sphinx/source/test_items/run_test_item.rst
+++ b/doc/manual/sphinx/source/test_items/run_test_item.rst
@@ -1,7 +1,15 @@
 **run** test item
 ============================================================
 
-This test item executes a new instance of testium.
+This test item executes a new instance of testium with the specified ``.tum`` file.
+
+* In **batch mode** (``-b``): the sub-instance is started with ``-b``.
+* In **GUI mode**: the sub-instance is started with ``-r`` (run and close).
+
+The item result is **SUCCESS** if the sub-instance launched and ran to completion,
+regardless of whether the sub-tests passed or failed.
+It is **FAILURE** if the file could not be found, the sub-instance could not be
+launched, or the time window was not reached (see ``start_time`` / ``end_time``).
 
 .. code-block:: yaml
     :caption: ``run`` test item usage example
@@ -18,12 +26,12 @@ Attributes
 
 run test item has the following specific attributes:
 
-* ``tum``: mandatory the path of the file to execute, it can be relative to current execution folder,
-* ``param_file`` (optional) the path of the parameter file to use, otherwise default parameter file is used.
-* ``python_bin`` (optional) the path of a specific python to run your scripts,
-* ``testium_path`` (optional) the path of a specific testium to run your scripts,
-* ``log_file`` (optional) the path of log file to register, if not provided a file is created with timestamp at the location of TUM file.
-* ``report_file`` (optional), the path of report file to create
-* ``start_time`` (optional), start time for the script execution, in HH:MM format.
-* ``end_time`` (optional), end time for an execution within a time frame, in HH:MM format.
-* ``wait_for_exec`` (optional). True or False, wait to be in the execution window defined by start_time and end_time to run the script.
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+* ``tum``: mandatory, the path of the file to execute. Can be relative to the current execution folder.
+* ``param_file`` (optional): the path of the parameter file to use; otherwise the default parameter file is used.
+* ``python_bin`` (optional): the path of a specific Python interpreter to use.
+* ``testium_path`` (optional): the path of a specific testium executable to use.
+* ``log_file`` (optional): the path of the log file. In GUI mode, if not provided, a file is created with a timestamp next to the ``.tum`` file. Not used in batch mode.
+* ``report_file`` (optional): the path of the report file to create.
+* ``start_time`` (optional): earliest time to execute the sub-instance, in ``HH:MM`` format.
+* ``end_time`` (optional): latest time for execution within a time frame, in ``HH:MM`` format.
+* ``wait_for_exec`` (optional): ``true`` to wait until the time window defined by ``start_time`` and ``end_time`` is reached before running. Requires both ``start_time`` and ``end_time``.
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