    # File lib/compass/commands/help.rb, line 72
          def execute
            if Compass::Commands.command_exists? options[:help_command]
              $command = options[:help_command]
              puts Compass::Commands[options[:help_command]].usage
              $command = "help"
            elsif Compass::Frameworks.template_exists? options[:help_command]
              puts Compass::Frameworks.template_usage(options[:help_command])
            else
              raise OptionParser::ParseError, "No such command: #{options[:help_command]}"
            end
          end