              for txt in text.splitlines():
                  indent = ""
                  if txt.startswith("L|"):
                      indent = "    "
                      txt = "  - {}".format(txt[2:])
                  output.extend(textwrap.wrap(txt, width, subsequent_indent=indent))
              return output
          return argparse.HelpFormatter._split_lines(self, text, width)
  
  
 
</s> remove         return argparse.HelpFormatter._split_lines(self, text, width)
 </s> add         return argparse.HelpFormatter._split_lines(self,  # pylint: disable=protected-access
                                                   text,
                                                   width) </s> remove             output = list()
 </s> add             output = [] </s> remove                        "Training - 'S': Save Now. 'R': Refresh Preview. 'M': Toggle Mask. "
                       "'ENTER': Save and Quit")
 </s> add                        "Training - 'S': Save Now. 'R': Refresh Preview. 'M': Toggle Mask. 'F': "
                       "Toggle Screen Fit-Actual Size. 'ENTER': Save and Quit") </s> remove         argument_list.append(dict(
            opts=("-ps", "--preview-scale"),
            action=Slider,
            min_max=(25, 200),
            rounding=25,
            type=int,
            dest="preview_scale",
            default=100,
            group=_("preview"),
            help=_("Percentage amount to scale the preview by. 100%% is the model output size.")))
 </s> add 
                    txt = f"  - {txt[2:]}"
              for txt in text.splitlines():
                  indent = ""
                  if txt.startswith("L|"):
                      indent = "    "
                    txt = f"  - {txt[2:]}"
                  output.extend(textwrap.wrap(txt, width, subsequent_indent=indent))
              return output
          return argparse.HelpFormatter._split_lines(self, text, width)
  
  
keep keep keep keep replace keep keep keep keep keep
 Live Preview - Replace cv2 with matplotlib viewer 
lib/cli/args.py