title: What happening when you copy application to application folder in Mac OS X
body: <p>How to know where are files coped in Mac OS X filesystem?
  And which files?</p>
  
  <p>UPD: I ask this questions because I found some files from the applications in other directories, not just in /Applications (i.e. ~/Library). So are these files created after I run the application ? (not in copying ?) Lots of people told that copying application is like installation in Mac OS X, so I think application can put some files, preferences in other directories when it's "installing".</p>