Confirm merge from FromPublicMasterBranch to master to sync with https://github.com/MicrosoftDocs/cpp-docs (branch master) (#411)

openpublishbuild · Colin Robertson · commit a67d138aa59e · 2017-11-02T15:00:31.000-07:00
* Fix Overview link in concurrency-runtime.

It was leading to overview-of-the-concurrency-runtime on the old msdn.microsoft.com site, not to asynchronous-message-blocks.

* Fix the display of underscore characters
diff --git a/docs/build/reference/link-environment-variables.md b/docs/build/reference/link-environment-variables.md
@@ -20,7 +20,7 @@ manager: "ghogen"
 
 The LINK tool uses the following environment variables:  
   
--   LINK and _LINK\_, if defined. The LINK tool prepends the options and arguments defined in the LINK environment variable and appends the options and arguments defined in the _LINK\_ environment variable to the command line arguments before processing.  
+-   LINK and \_LINK\_, if defined. The LINK tool prepends the options and arguments defined in the LINK environment variable and appends the options and arguments defined in the \_LINK\_ environment variable to the command line arguments before processing.  
   
 -   LIB, if defined. The LINK tools uses the LIB path when searching for an object, library, or other file specified on the command line or by the [/BASE](../../build/reference/base-base-address.md) option. It also uses the LIB path to find a .pdb file named in an object. The LIB variable can contain one or more path specifications, separated by semicolons. One path must point to the \lib subdirectory of your Visual C++ installation.  
   
@@ -33,4 +33,4 @@ The LINK tool uses the following environment variables:
 [Setting Linker Options](../../build/reference/setting-linker-options.md)   
 [Linker Options](../../build/reference/linker-options.md)   
 [Build C/C++ code on the command line](../../build/building-on-the-command-line.md)  
-[Set the Path and Environment Variables for Command-Line Builds](../../build/setting-the-path-and-environment-variables-for-command-line-builds.md)
+[Set the Path and Environment Variables for Command-Line Builds](../../build/setting-the-path-and-environment-variables-for-command-line-builds.md)
