Cpp.HelpProject.xml

<?xml version="1.0" encoding="utf-8"?>
<!-- Help Project Property Page -->
<ProjectSchemaDefinitions xmlns="http://schemas.microsoft.com/build/2009/properties">
  <ContentType Name="HelpProject" DisplayName="Help Project (Content)" ItemType="HelpProject" />
  <ItemType Name="HelpProject" DisplayName="Help Project" />
  <FileExtension Name=".hhp" ContentType="HelpProject" />

  <Rule Name="HelpProject" DisplayName="Help Compiler" Order="10" PageTemplate="tool"   >
    <Rule.Categories>
      <Category Name="General" DisplayName="General" />
    </Rule.Categories>
    <Rule.DataSource>
      <DataSource Persistence="ProjectFile" ItemType="HelpProject" HasConfigurationCondition="false" />
    </Rule.DataSource>
    <StringListProperty Category="General"                Name="HelpIdMappingRules"     DisplayName="Help IDs Mapping Rules"      Description="Defines the mapping rules from C/C++ resource IDs to help resource IDs.&#13;&#10;Format: IDx_,HIDx_,&lt;offset&gt; with HIDx_ = IDx_ + &lt;offset&gt;" />
    <StringListProperty Category="General" Subtype="file" Name="ResourceHeaderFiles"    DisplayName="C/C++ Resource Header Files" Description="Defines the pathes of the C/C++ header files (.h) containing the C/C++ resource IDs that will be mapped to help resource IDs." />
    <StringProperty     Category="General" Subtype="file" Name="SynonymTopicsFile"      DisplayName="Help Synonym Topics File"    Description="Defines the path of the help topic synonyms file."/>
    <StringProperty     Category="General" Subtype="file" Name="IgnoreTopicsFile"       DisplayName="Help Ignore  Topics File"    Description="Defines the path of the help topics to ignore file."/>
  </Rule>
</ProjectSchemaDefinitions>