old_contents: import sublime_plugin
  
  
  class ShowResponseCommand(sublime_plugin.WindowCommand):
      default_syntax = 'Packages/JavaScript/JSON.tmLanguage'
  
      def run(self, title="", text=""):
          panel = self.window.new_file()
          panel.set_name('{}'.format(title))
          panel.set_scratch(True)
          panel.set_syntax_file(self.default_syntax)
          panel.set_scratch(True)
          panel.set_read_only(False)
          panel.settings().set('gutter', True)
          panel.settings().set('line_numbers', True)
          panel.settings().set('word_wrap', False)
          panel.run_command('append', {'characters': text})
          panel.set_read_only(True)
  
new_contents: import sublime_plugin
  
  
  class ShowResponseCommand(sublime_plugin.WindowCommand):
      default_syntax = 'Packages/JavaScript/JSON.tmLanguage'
  
      def run(self, title="", text=""):
          panel = self.window.new_file()
          panel.set_name('RESPONSE: {}'.format(title))
          panel.set_scratch(True)
          panel.set_syntax_file(self.default_syntax)
          panel.set_scratch(True)
          panel.set_read_only(False)
          panel.settings().set('gutter', True)
          panel.settings().set('line_numbers', True)
          panel.settings().set('word_wrap', False)
          panel.run_command('append', {'characters': text})
          panel.set_read_only(True)
  
subject: change panel name format.