add inline/extract fragments to explorer doc

studio-docs/source/explorer.mdx

@@ -118,6 +118,12 @@ For more information, see the [documentation for preflight scripts](https://gith
 
 You can view an operation's response as JSON or as a table. Table layout is especially useful when your response includes an array, or when you want to share a query's results with someone who isn't familiar with JSON.
 
+#### Inline/Extract fragments
+
+> Right-click any fragment name to inline that fragment in queries where it is used. Right-click any selection of fields to extract those fields into a fragment.
+
+While editing your operations, you can now inline and extract your fragments with one click. This is useful when trying to select the same fields in multiple places using fragments, or when trying too inline fragments into a single operation to be used somewhere else.
+
 #### Inline/Extract variables
 
 > Click the "**...**" menu next to an operation in the editor to select a notation for variables.