Update docs with examples of DSLSchema.__call__ shortcut syntax

Author: kasbaker

docs/advanced/dsl_module.rst

@@ -328,6 +328,16 @@ The above example will generate the following request::
         }
     }
 
+Alternatively, you can use the DSL shortcut syntax to create a fragment by
+passing the string ``"fragment"`` directly to the :meth:`__call__ <gql.dsl.DSLSchema.__call__>` method.
+When using the shortcut, you must also provide the fragment name via the ``name`` parameter::
+
+    name_and_appearances = (
+        ds("fragment", "NameAndAppearances")
+        .on(ds.Character)
+        .select(ds.Character.name, ds.Character.appearsIn)
+    )
+
 Inline Fragments
 ^^^^^^^^^^^^^^^^
 
@@ -373,6 +383,14 @@ this can be written in a concise manner::
         DSLInlineFragment().on(ds.Human).select(ds.Human.homePlanet)
     )
 
+Alternatively, you can use the DSL shortcut syntax to create an inline fragment by
+passing the string ``"..."`` directly to the :meth:`__call__ <gql.dsl.DSLSchema.__call__>` method::
+
+    query_with_inline_fragment = ds.Query.hero.args(episode=6).select(
+        ds.Character.name,
+        ds("...")
+    )
+
 Meta-fields
 ^^^^^^^^^^^
 
@@ -384,6 +402,15 @@ you can use the :class:`DSLMetaField <gql.dsl.DSLMetaField>` class::
         DSLMetaField("__typename")
     )
 
+Alternatively, you can use the DSL shortcut syntax to create the same meta-field by
+passing the ``"__typename"`` string directly to the :meth:`__call__ <gql.dsl.DSLSchema.__call__>` method::
+
+    query = ds.Query.hero.select(
+        ds.Character.name,
+        ds("__typename")
+    )
+
+
 Directives
 ^^^^^^^^^^