# File lib/nanoc3/cli/commands/compile.rb, line 19
    def long_desc
      'Compile all items of the current site. If an identifier is given, ' +
      'only the item with the given identifier will be compiled. ' +
      "\n\n" +
      'By default, only item that are outdated will be compiled. This can ' +
      'speed up the compilation process quite a bit, but items that include ' +
      'content from other items may have to be recompiled manually. In ' +
      'order to compile items even when they are outdated, use the --force option.'
    end