- Move comment about pch use to pch for CalcManager.

CONTRIBUTING.md

@@ -44,12 +44,6 @@ the code. Please attempt to match the style of surrounding code as much as possi
 components, prefer the patterns described in the [C++ core guidelines](https://isocpp.github.io/CppCoreGuidelines/CppCoreGuidelines)
 and the [modern C++/WinRT language projections](https://docs.microsoft.com/en-us/windows/uwp/cpp-and-winrt-apis/).
 
-The projects in this codebase typically make use of precompiled headers (pch.h). When it is necessary to include a
-system header, please include it in the pch.h for the relevant project. For the CalcManager project specifically,
-the project should be able to be compiled with or without a precompiled header in-order to support other toolsets
-besides MSVC.  For this project, make sure that the relevant source file includes all headers it needs, but then also
-add the system headers to the pch so that MSVC users see the performance benefit.
-
 ### Testing
 Your change should include tests to verify new functionality wherever possible. Code should be
 structured so that it can be unit tested independently of the UI. [Manual test cases](docs/ManualTests.md)

src/CalcManager/pch.h

@@ -3,6 +3,11 @@
 
 #pragma once
 
+// The CalcManager project should be able to be compiled with or without a precompiled header
+// in - order to support other toolchains besides MSVC. When adding new system headers, make sure
+// that the relevant source file includes all headers it needs, but then also add the system headers
+// here so that MSVC users see the performance benefit.
+
 #include <algorithm>
 #include <array>
 #include <cassert>