anchor.diff:  In some cases you can also check these variables by examining the cache using
   ccmake or cmake-gui.
   
  -[[building-the-example]]
  -Building the Example
  -~~~~~~~~~~~~~~~~~~~~
  +# Building the Example
   
   [source,bash]
   ----
  
positive.code: = Including Third Party Library
  
  :toc:
  :toc-placement!:
  
  toc::[]
  
  
  [[intro]]
  Introduction
  ------------
  
  Nearly all non-trivial projects will have a requirement for including third party
  libraries, headers, or programs. CMake has support for finding the path to these tools using
  
negative.code:   * CMakeLists.txt - Contains the CMake commands you wish to run
    * main.cpp - The source file with main
  
  # Requirements
  
  This example requires the boost libraries to be installed in a default system
  location.
  
  # Concepts
  
  ## Finding a Package
  
  As mentioned above the `find_package()` function will search for CMake modules in the formant
  "FindXXX.cmake" from the list of folders in `CMAKE_MODULE_PATH`. The exact
  