In the customization buffer, each element is displayed and edited
separately, according to the type specified for it.
+@item (group @var{element-types}@dots{})
+This works like @code{list} except for the formatting
+of text in the Custom buffer. @code{list} labels each
+element value with its tag; @code{group} does not.
+
@item (vector @var{element-types}@dots{})
Like @code{list} except that the value must be a vector instead of a
list. The elements work the same as in @code{list}.