Help: Improve/fix incorrect docs for list(SORT) sub-options

Help/command/list.rst

@@ -256,20 +256,24 @@ Reverses the contents of the list in-place.
   list(SORT <list> [COMPARE <compare>] [CASE <case>] [ORDER <order>])
 
 Sorts the list in-place alphabetically.
-Use the option ``<compare>`` to select the compare type for sorting.
-The ``<compare>`` option may be one of:
+Use the ``COMPARE`` keyword to select the comparison method for sorting.
+The ``<compare>`` option should be one of:
 
-* ``STRING``: Sorts a list of strings alphabetically.
-* ``FILE_BASENAME``: Sort a list of pathnames of files by their basenames.
+* ``STRING``: Sorts a list of strings alphabetically.  This is the
+  default behavior if the ``COMPARE`` option is not given.
+* ``FILE_BASENAME``: Sorts a list of pathnames of files by their basenames.
 
-Use the option ``<case>`` to select a case sensitive or case insensitive sort mode.
-The ``<case>`` option may be one of:
+Use the ``CASE`` keyword to select a case sensitive or case insensitive
+sort mode.  The ``<case>`` option should be one of:
 
-* ``SENSITIVE``: Sorts the list alphabetically.
-* ``INSENSITIVE``: Sorts the list alphabetically in descending order.
+* ``SENSITIVE``: List items are sorted in a case-sensitive manner.  This is
+  the default behavior if the ``CASE`` option is not given.
+* ``INSENSITIVE``: List items are sorted case insensitively.  The order of
+  items which differ only by upper/lowercase is not specified.
 
-Use the option ``<order>`` to select a case sensitive or case insensitive sort mode.
-The ``<order>`` option may be one of:
+To control the sort order, the ``ORDER`` keyword can be given.
+The ``<order>`` option should be one of:
 
-* ``ASCENDING``: Sorts the list in ascending order.
+* ``ASCENDING``: Sorts the list in ascending order.  This is the default
+  behavior when the ``ORDER`` option is not given.
 * ``DESCENDING``: Sorts the list in descending order.