anchor.diff:  
   *Resources*
   
  -* https://www.youtube.com/watch?v=Un80XoRT1ME[A three-minutes video] of designing architecture of and discovering component APIs for a Game of Tic-Tac-Toe.
  +* https://se-edu.github.io/se-book/reuse/apis/[se-edu/se-book: Implementation: Reuse: APIs]
   
   '''
   
  
positive.code: 
  Note how this project uses the http://checkstyle.sourceforge.net/[CheckStyle] static analysis tool to confirm compliance with the coding standard.
  
  Other popular Java static analysis tools:
  
  * http://findbugs.sourceforge.net/[Find Bugs]
  * https://pmd.github.io/[PMD]
  
  === Exercise: Use the CheckStyle Eclipse plugin
  
  * Install the http://eclipse-cs.sourceforge.net/#!/[CheckStyle Eclipse plugin] and use it to detect coding standard violations.
  
  '''
  
  
negative.code: 
  === Exercise: Write more automated GUI tests
  
  * Covered by `[LO-SystemTesting]`
  
  '''
  
  