Enhance documentation for RPGLE extensions with implementation detail…

…s and workspace symbols

Signed-off-by: worksofliam <mrliamallan@live.co.uk>

src/content/docs/extensions/rpgle/index.mdx

@@ -120,10 +120,18 @@ Just like definitions, you are able to find all references to definitions with G
 
 Go to implementation works for procedures in two ways.
 
-* For all sources (members/streamfiles/local) it will do a lookup of the procedure name in the binding directories you have specified in the `BNDDIR` header/control-spec and try to open the source up for it.
-   * Look up uses the Code for IBM i library list if the binding directory is not qualified with a library.
+* For all sources (members/streamfiles/local) it will do a lookup of the procedure name in the binding directories found on your library list.
 * For local projects it will take you to the implementation of an export procedure wherever it is in your project.
 
+![](../../../../assets/rpgle/implementation.png)
+
+### Workspace symbols
+
+Workspace symbols shows all available exports.
+
+* For all sources (members/streamfiles/local) it will list all export procedure names in the binding directories found on your library list.
+* For local projects it list all export procedure names in your project.
+
 ### Format Document
 
 You can automatically fix all indentation of your free-format sources by using Format Document inside of VS Code.