Added some links

Author: phecke

powerapps-docs/developer/common-data-service/logging-tracing.md

@@ -15,7 +15,7 @@ search.app:
   - PowerApps
   - D365CE
 ---
-# Logging and tracing
+# Tracing and logging
 
  An alternative method to troubleshoot a plug-in or custom workflow activity (custom code), compared to debugging in [!INCLUDE[pn_Visual_Studio](../../includes/pn-visual-studio.md)], is to use tracing. Tracing assists developers by recording run-time custom information as an aid in diagnosing the cause of code failures. Tracing is especially useful to troubleshoot [!INCLUDE[pn_CRM_Online](../../includes/pn-crm-online.md)] registered custom code as it is the only supported troubleshooting method for that scenario. Tracing is supported for sandboxed (partial trust) and full trust registered custom code and during synchronous or asynchronous execution. Tracing isn’t supported for custom code that executes in [!INCLUDE[pn_microsoft_dynamics_crm_for_outlook](../../includes/pn-microsoft-dynamics-crm-for-outlook.md)] or other mobile client.  
 

powerapps-docs/developer/common-data-service/plug-ins.md

@@ -80,3 +80,10 @@ These topics provide details that you will use to create plug-ins.
 - [Handle exceptions](handle-exceptions.md)
 - [Register a plug-in](register-plug-in.md)
 - [Debug Plug-ins](debug-plug-in.md)
+- 
+These topics provide additional information about writing or debugging a plug-in, or analyzing its performance.
+
+- [Impersonate a user](impersonate-a-user.md)
+- [Tracing and logging](logging-tracing.md])
+- [Analyze performance](analyze-performance.md)
+- [Access external web resources](access-web-services.md)]