diff --git a/src/diana/drawer/svg.py b/src/diana/drawer/svg.py
--- a/src/diana/drawer/svg.py
+++ b/src/diana/drawer/svg.py
@@ -23,6 +23,12 @@ class Svg(Drawer):
 		self.padding = 30
 
 	def render(self, template_name, bgcolor=""):
+		"""Render the template with the current drawer state.
+
+		:param str template_name: a template file name in the templ directory
+		:param bgcolor: a background color
+		:type bgcolor: an SVG color, which is the same as a CSS color
+		:return: the rendered template string"""
 		points = [p for (i, p) in sorted(self._index.values(), key=lambda x: x[0])]
 
 		stones = [p for p in points if p.color and p.label == ""]
@@ -36,6 +42,12 @@ class Svg(Drawer):
 		return self._env.get_template(template_name).render(params)
 
 	def save(self, filename, template="templ.svg", bgcolor=""):
+		"""Render the template and save it with the filename.
+
+		:param str filename: a path where to save the diagram. SVG and TXT suffixes will be appended
+		:param str template: a template file name in the templ directory
+		:param bgcolor: a background color
+		:type bgcolor: an SVG color, which is the same as a CSS color"""
 		file = open(filename+".svg", 'w')
 		file.write(self.render(template, bgcolor))
 		file.close()