added docstrings for API methods

grum/mainwin.py

@@ -87,12 +87,21 @@ class MainWindow(QMainWindow):
     # Remote API calls
 
     def new_plot(self, name, cfg):
+        """
+        Create a new plot <name> using the configuration dict <cfg>.
+        The configuration is forwarded to the constructor of PlotDescription.
+        Allowed keys are: title, xlabel, ylabel, xs, ys.
+        """
         desc = self.add_new_desc_to_list(name, cfg)
         if self.menu_settings.checkboxes["Open new plots"].isChecked():
             if not self.mdi.findSubWindow(name):
                 self.sig_make_new_plot.emit(name, desc)
 
     def append_data(self, name, point):
+        """
+        Append a new data point <point> to the (existing) plot <name>.
+        The point is forwarded to the append method of PlotDescription.
+        """
         item = self.lst.get(name)
         desc = item.value
         desc.append(point)