Help: Use <variable> consistently in property getter commands

Property-related commands used a mix of <VAR>, <var>, or
<variable> to specify the variable to store the result in. The <VAR>
form is particularly confusing, since being uppercase it looks more
like a keyword. Use <variable> consistently across all the commands
so that the behavior is clear.

Help/command/get_cmake_property.rst

@@ -5,11 +5,11 @@ Get a global property of the CMake instance.
 
 .. code-block:: cmake
 
-  get_cmake_property(<var> <property>)
+  get_cmake_property(<variable> <property>)
 
 Gets a global property from the CMake instance.  The value of
-the ``<property>`` is stored in the variable ``<var>``.
-If the property is not found, ``<var>`` will be set to ``NOTFOUND``.
+the ``<property>`` is stored in the specified ``<variable>``.
+If the property is not found, ``<variable>`` will be set to ``NOTFOUND``.
 See the :manual:`cmake-properties(7)` manual for available properties.
 
 In addition to global properties, this command (for historical reasons)

Help/command/get_target_property.rst

@@ -5,15 +5,15 @@ Get a property from a target.
 
 .. code-block:: cmake
 
-  get_target_property(<VAR> <target> <property>)
+  get_target_property(<variable> <target> <property>)
 
-Get a property from a target.  The value of the property is stored in
-the variable ``<VAR>``.  If the target property is not found, the behavior
+Get a property from a target.  The value of the property is stored in the
+specified ``<variable>``.  If the target property is not found, the behavior
 depends on whether it has been defined to be an ``INHERITED`` property
-or not (see :command:`define_property`).  Non-inherited properties will
-set ``<VAR>`` to ``<VAR>-NOTFOUND``, whereas inherited properties will search
-the relevant parent scope as described for the :command:`define_property`
-command and if still unable to find the property, ``<VAR>`` will be set to
+or not (see :command:`define_property`).  Non-inherited properties will set
+``<variable>`` to ``<variable>-NOTFOUND``, whereas inherited properties will
+search the relevant parent scope as described for the :command:`define_property`
+command and if still unable to find the property, ``<variable>`` will be set to
 an empty string.
 
 Use :command:`set_target_properties` to set target property values.

Help/command/get_test_property.rst

@@ -5,15 +5,15 @@ Get a property of the test.
 
 .. code-block:: cmake
 
-  get_test_property(<test> <property> [DIRECTORY <dir>] <VAR>)
+  get_test_property(<test> <property> [DIRECTORY <dir>] <variable>)
 
 Get a property from the test.  The value of the property is stored in
-the variable ``<VAR>``.  If the test property is not found, the behavior
+the specified ``<variable>``.  If the test property is not found, the behavior
 depends on whether it has been defined to be an ``INHERITED`` property
 or not (see :command:`define_property`).  Non-inherited properties will set
-``<VAR>`` to ``NOTFOUND``, whereas inherited properties will search the
+``<variable>`` to ``NOTFOUND``, whereas inherited properties will search the
 relevant parent scope as described for the :command:`define_property`
-command and if still unable to find the property, ``<VAR>`` will be set to
+command and if still unable to find the property, ``<variable>`` will be set to
 an empty string.
 
 For a list of standard properties you can type