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+++ b/docs/terminology.rst	Wed Sep 03 21:56:20 2014 +0200
@@ -0,0 +1,18 @@
+Terminology
+===========
+
+
+Buffer
+------
+
+Buffer is rectangular offscreen area of known size.
+
+It can be drawn on the screen or into another buffer.
+
+
+Widget
+------
+
+Basic element of the application.
+
+* Can draw itself in given buffer on given position.