Help: Clarify get_cmake_property command documentation

Closes: #13810, #16258

1 files changed, 8 insertions, 3 deletions

diff --git a/Help/command/get_cmake_property.rst b/Help/command/get_cmake_property.rst
index 3a6fb41..497ab4e 100644
--- a/Help/command/get_cmake_property.rst
+++ b/Help/command/get_cmake_property.rst
@@ -1,15 +1,20 @@
 get_cmake_property
 ------------------
 
-Get a property of the CMake instance.
+Get a global property of the CMake instance.
 
 ::
 
   get_cmake_property(VAR property)
 
-Get a property from the CMake instance.  The value of the property is
+Get 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".  See the :manual:`cmake-properties(7)` manual
 for available properties.
 
-See also the more general :command:`get_property` command.
+See also the :command:`get_property` command ``GLOBAL`` option.
+
+In addition to global properties, this command (for historical reasons)
+also supports the :prop_dir:`VARIABLES` and :prop_dir:`MACROS` directory
+properties.  It also supports a special ``COMPONENTS`` global property that
+lists the components given to the :command:`install` command.