Update /Gh, /GH per 2278

Author: Colin Robertson

docs/build/reference/gh-enable-penter-hook-function.md

@@ -1,6 +1,7 @@
 ---
 title: "/Gh (Enable _penter Hook Function)"
-ms.date: "11/04/2016"
+description: "Describes the /Gh compiler option to call the supplied _penter function."
+ms.date: "07/06/2020"
 f1_keywords: ["_penter"]
 helpviewer_keywords: ["/Gh compiler option [C++]", "Gh compiler option [C++]", "_penter function", "-Gh compiler option [C++]"]
 ms.assetid: 1510a082-8a0e-486e-a309-6add814b494f
@@ -11,50 +12,41 @@ Causes a call to the `_penter` function at the start of every method or function
 
 ## Syntax
 
-```
-/Gh
-```
+> **`/Gh`**
 
 ## Remarks
 
-The `_penter` function is not part of any library and it is up to you to provide a definition for `_penter`.
+The `_penter` function isn't part of any library. It's up to you to provide a definition for `_penter`.
 
-Unless you plan to explicitly call `_penter`, you do not need to provide a prototype. The function must appear as if it had the following prototype, and it must push the content of all registers on entry and pop the unchanged content on exit:
+Unless you plan to explicitly call `_penter`, you don't need to provide a prototype. The function must push the content of all registers on entry and pop the unchanged content on exit. It must appear as if it had the following prototype:
 
 ```cpp
 void __declspec(naked) __cdecl _penter( void );
 ```
 
-This declaration is not available for 64-bit projects.
+This declaration isn't available for 64-bit projects.
 
 ### To set this compiler option in the Visual Studio development environment
 
 1. Open the project's **Property Pages** dialog box. For details, see [Set C++ compiler and build properties in Visual Studio](../working-with-project-properties.md).
 
-1. Click the **C/C++** folder.
-
-1. Click the **Command Line** property page.
+1. Open the **Configuration Properties** > **C/C++** > **Command Line** property page.
 
-1. Type the compiler option in the **Additional Options** box.
+1. Enter the compiler option in the **Additional Options** box.
 
 ### To set this compiler option programmatically
 
 - See <xref:Microsoft.VisualStudio.VCProjectEngine.VCCLCompilerTool.AdditionalOptions%2A>.
 
 ## Example
 
-The following code, when compiled with **/Gh**, shows how `_penter` is called twice; once when entering function `main` and once when entering function `x`.
+The following code, when compiled with **/Gh**, shows how `_penter` is called twice; once when entering function `main` and once when entering function `x`. The example consists of two source files, which you compile separately.
 
 ```cpp
-// Gh_compiler_option.cpp
-// compile with: /Gh
+// local_penter.cpp
+// compile with: cl /EHsc /c local_penter.cpp
 // processor: x86
 #include <stdio.h>
-void x() {}
-
-int main() {
-   x();
-}
 
 extern "C" void __declspec(naked) __cdecl _penter( void ) {
    _asm {
@@ -82,12 +74,29 @@ extern "C" void __declspec(naked) __cdecl _penter( void ) {
 }
 ```
 
+```cpp
+// Gh_compiler_option.cpp
+// compile with: cl /EHsc /Gh Gh_compiler_option.cpp local_penter.obj
+// processor: x86
+#include <stdio.h>
+
+void x() {}
+
+int main() {
+   x();
+}
+```
+
+When run, the local `_penter` function is called on entry to `main` and `x`:
+
 ```Output
+
 In a function!
 In a function!
 ```
 
 ## See also
 
-[MSVC Compiler Options](compiler-options.md)<br/>
-[MSVC Compiler Command-Line Syntax](compiler-command-line-syntax.md)
+[MSVC compiler options](compiler-options.md)<br/>
+[MSVC compiler command-line syntax](compiler-command-line-syntax.md)<br/>
+[`/GH` (Enable _pexit hook function)](gh-enable-pexit-hook-function.md)

docs/build/reference/gh-enable-pexit-hook-function.md

@@ -1,6 +1,7 @@
 ---
 title: "/GH (Enable _pexit Hook Function)"
-ms.date: "11/04/2016"
+description: "Describes the /GH compiler option to set a local _pexit hook function."
+ms.date: "07/06/2020"
 f1_keywords: ["_pexit"]
 helpviewer_keywords: ["/Gh compiler option [C++]", "Gh compiler option [C++]", "_pexit function", "-Gh compiler option [C++]"]
 ms.assetid: 93181453-2676-42e5-bf63-3b19e07299b6
@@ -11,31 +12,29 @@ Calls the `_pexit` function at the end of every method or function.
 
 ## Syntax
 
-```
-/GH
-```
+> **`/GH`**
 
 ## Remarks
 
-The `_pexit` function is not part of any library and it is up to you to provide a definition for `_pexit`.
+The `_pexit` function isn't part of any library. It's up to you to provide a definition for `_pexit`.
 
-Unless you plan to explicitly call `_pexit`, you do not need to provide a prototype. The function must appear as if it had the following prototype, and it must push the content of all registers on entry and pop the unchanged content on exit:
+Unless you plan to explicitly call `_pexit`, you don't need to provide a prototype. The function must push the content of all registers on entry and pop the unchanged content on exit. It must appear as if it had the following prototype:
 
 ```cpp
 void __declspec(naked) __cdecl _pexit( void );
 ```
 
-`_pexit` is similar to `_penter`; see [/Gh (Enable _penter Hook Function)](gh-enable-penter-hook-function.md) for an example of how to write a `_pexit` function.
+This declaration isn't available for 64-bit projects.
+
+`_pexit` is similar to `_penter`; see [`/Gh` (Enable _penter Hook Function)](gh-enable-penter-hook-function.md) for an example of how to write a `_penter` function.
 
 ### To set this compiler option in the Visual Studio development environment
 
 1. Open the project's **Property Pages** dialog box. For details, see [Set C++ compiler and build properties in Visual Studio](../working-with-project-properties.md).
 
-1. Click the **C/C++** folder.
-
-1. Click the **Command Line** property page.
+1. Open the **Configuration Properties** > **C/C++** > **Command Line** property page.
 
-1. Type the compiler option in the **Additional Options** box.
+1. Enter the compiler option in the **Additional Options** box.
 
 ### To set this compiler option programmatically
 
@@ -44,4 +43,5 @@ void __declspec(naked) __cdecl _pexit( void );
 ## See also
 
 [MSVC Compiler Options](compiler-options.md)<br/>
-[MSVC Compiler Command-Line Syntax](compiler-command-line-syntax.md)
+[MSVC Compiler Command-Line Syntax](compiler-command-line-syntax.md)<br/>
+[`/Gh` (Enable _penter hook function)](gh-enable-penter-hook-function.md)