anchor.diff:  The Web Config Transform Extension Buildpack injects environment-specific appSettings and connectionString values 
   into legacy ASP.Net app containers by performing token replacements during `cf push` staging.
   
  -To create a Web Config Transform Extension Buildpack, complete the following procedures:  
  +To leverage the Web Config Transform Extension Buildpack, complete the following procedures:  
   
   1. [Identify Environment Dependent Configurations and Externalize](#tokenize)
   1. [Create a Parameterized Cloud Foundry App Manifest](#create-manifest)
  
positive.code: ---
  title: Creating an Extension Buildpack for ASP.NET Apps
  owner: Buildpacks
  ---
  
  This topic explains how to write a Web Config Transform Extension Buildpack for ASP.NET apps.  
  
  ## <a id='prerequisites'></a>Prerequisites
  
  * Linux or MacOS development machine or VM
  * [golang](https://golang.org/) v1.10 or later programming language
  * [direnv](https://direnv.net/) environment variable manager for your shell
  
  
  ## <a id='overview'></a> Overview
  
negative.code:     </connectionStrings>
      ```
  
  
  
  1. To externalize your `Web.config` and `Web.Release.config` files, tokenize each of the files' 
  environment-specific properties using the format `#{configPath:key}`.  
  