code: def setup_page(self):
          
          settings_group = QGroupBox(_("Settings"))
          hist_spin = self.create_spinbox(
                              _("History depth: "), _(" entries"),
                              'max_entries', min_=10, max_=10000, step=10,
                              tip=_("Set maximum line count"))
  
          sourcecode_group = QGroupBox(_("Source code"))
          wrap_mode_box = self.create_checkbox(_("Wrap lines"), 'wrap')
          linenumbers_mode_box = self.create_checkbox(_("Show line numbers"),
                                                      'line_numbers')
          go_to_eof_box = self.create_checkbox(
                          _("Scroll automatically to last entry"), 'go_to_eof')
  
          settings_layout = QVBoxLayout()
          settings_layout.addWidget(hist_spin)
          settings_group.setLayout(settings_layout)
  
          sourcecode_layout = QVBoxLayout()
          sourcecode_layout.addWidget(wrap_mode_box)
          sourcecode_layout.addWidget(linenumbers_mode_box)
          sourcecode_layout.addWidget(go_to_eof_box)
          sourcecode_group.setLayout(sourcecode_layout)
  
          vlayout = QVBoxLayout()
          vlayout.addWidget(settings_group)
          vlayout.addWidget(sourcecode_group)
          vlayout.addStretch(1)
          self.setLayout(vlayout)
docs: Setup config page widgets and options.