anchor.diff:  
   ## <a id='push'></a> Push an App
   
  -The `cf push` command pushes a new app or syncs changes to an existing app. 
  +This section describes how to use the `cf push` command to push a new app or sync changes to an existing app. 
   
   For more information, see [push](http://cli.cloudfoundry.org/en-US/cf/push.html) in the _Cloud Foundry CLI Reference Guide_.
   
  
positive.code: </pre>
  
  
  #### Supply Parameters Through a Third-Party
  
  To create a service instance that sends data to a third-party, use the `-l` option followed by the external destination URL. This example creates a service instance that sends log information to the syslog drain URL of a third-party log management service. For specific log service instructions, see the [Service-Specific Instructions for Streaming Application Logs](https://docs.cloudfoundry.org/devguide/services/log-management-thirdparty-svc.html) topic.
  
    <pre class="terminal">$ cf cups mylog -l syslog://logs4.example.com:25258
  Creating user provided service mylog in org example-org / space development as username<span>@</span>example.com...
  OK
  </pre>
  
  After you create a user-provided service instance, you bind it to an app with [cf bind-service](http://cli.cloudfoundry.org/en-US/cf/bind-service.html), 
  unbind it with [cf unbind-service](http://cli.cloudfoundry.org/en-US/cf/unbind-service.html), rename it with [cf rename-service](http://cli.cloudfoundry.org/en-US/cf/rename-service.html), and delete it with [cf delete-service](http://cli.cloudfoundry.org/en-US/cf/delete-service.html).
  
  ### <a id='user-uups'></a> Update a Service Instance ###
  
  
negative.code: 
  ## <a id='return-codes'></a> Retrieve cf CLI Return Codes
  
  The cf CLI uses exit codes, which help with scripting and confirming that a command has run successfully. 
  
  After you run a cf CLI command, you can retrieve its return code by running `echo $?` on Mac or `echo %ERRORLEVEL%` on Windows. If the return code is `0`, the command was successful.
  
  ## <a id='help'></a> View CLI Help Output
  
  The `cf help`  command lists the cf CLI commands and a brief description of each. For more information, see [help](http://cli.cloudfoundry.org/en-US/cf/help.html) in the _Cloud Foundry CLI Reference Guide_.
  
  Passing the `-h` flag to any command lists detailed help, including any aliases. 
  
  The following example shows detailed help output for `cf delete`:
  
  <pre class="terminal">
  $ cf delete -h
  