--- a/demos/demo_buffer.py	Fri Mar 14 10:03:36 2014 +0100
+++ b/demos/demo_buffer.py	Fri Mar 14 10:30:43 2014 +0100
@@ -12,6 +12,7 @@
 buf.hline(1, 6, 14, c='-')
 buf.vline(7, 2, 4, c='|')
 buf.puts(8, 4, 'Hello!')
+buf.frame()
 
 for y in range(buf.size.h):
     for x in range(buf.size.w):

--- a/tuikit/core/buffer.py	Fri Mar 14 10:03:36 2014 +0100
+++ b/tuikit/core/buffer.py	Fri Mar 14 10:30:43 2014 +0100
@@ -1,4 +1,5 @@
 from tuikit.common import Size
+from tuikit.core.unigraph import unigraph_default
 
 
 class Cell:
@@ -63,6 +64,16 @@
         cell = self._data[y * self._size.w + x]
         return cell.char, self._attr_descs[cell.attr]
 
+    def setattr(self, attr_desc):
+        """Set attribute to be used for subsequent draw operations."""
+        if attr_desc in self._attr_map:
+            attr = self._attr_map[attr_desc]
+        else:
+            attr = len(self._attr_descs)
+            self._attr_descs.append(attr_desc)
+            self._attr_map[attr_desc] = attr
+        self._current_attr = attr
+
     def putch(self, x, y, ch):
         """Set character on xy coords to c."""
         self._data[y * self._size.w + x].set(ch, self._current_attr)
@@ -83,19 +94,31 @@
             self.putch(x, y + i, c)
 
     def fill(self, x=0, y=0, w=0, h=0, c=' '):
-        """Fill rectangular area."""
+        """Fill rectangular area.
+
+        Fill whole buffer if width or height is not specified (zero).
+
+        """
         w = self._size.w if not w else w
         h = self._size.h if not h else h
         for i in range(h):
             self.hline(x, y + i, w, c)
 
-    def setattr(self, attr_desc):
-        """Set attribute to be used for subsequent draw operations."""
-        if attr_desc in self._attr_map:
-            attr = self._attr_map[attr_desc]
-        else:
-            attr = len(self._attr_descs)
-            self._attr_descs.append(attr_desc)
-            self._attr_map[attr_desc] = attr
-        self._current_attr = attr
+    def frame(self, x=0, y=0, w=0, h=0, style=unigraph_default):
+        """Draw rectangular frame.
+
+        Frame whole buffer if width or height is not specified (zero).
+        Use line-drawing characters from `style` bank.
 
+        """
+        w = self._size.w if not w else w
+        h = self._size.h if not h else h
+        self.putch(x,      y,      style.frame_ulcorner)
+        self.putch(x+w-1,  y,      style.frame_urcorner)
+        self.putch(x,      y+h-1,  style.frame_llcorner)
+        self.putch(x+w-1,  y+h-1,  style.frame_lrcorner)
+        self.hline(x+1,    y,      w-2,  style.frame_hline)
+        self.hline(x+1,    y+h-1,  w-2,  style.frame_hline)
+        self.vline(x,      y+1,    h-2,  style.frame_vline)
+        self.vline(x+w-1,  y+1,    h-2,  style.frame_vline)
+

--- a/tuikit/core/unigraph.py	Fri Mar 14 10:03:36 2014 +0100
+++ b/tuikit/core/unigraph.py	Fri Mar 14 10:30:43 2014 +0100
@@ -69,3 +69,6 @@
     def __getitem__(self, name):
         return getattr(self, name)
 
+
+# Default instance
+unigraph_default = UnicodeGraphics()