diff --git a/GridWidgit.otl b/GridWidgit.otl
new file mode 100755
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--- /dev/null
+++ b/GridWidgit.otl
@@ -0,0 +1,88 @@
+
+General Structure
+|
+|
+|   	|    			     		       |     |
+|   	+----------------------------------+     | loading buffer
+|   	+----------------------------------+     | (rows loading or unloading while scrolling)
+|   	|    			     		 	   |     |
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|												-+
+|												-+
+|   	+----------------------------------+	 | scroll buffer
+|   	|    			     		 	   |     | (loaded rows)
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|   	+----------------------------------+     |
+|   	|    			     		 	   |     |
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|												-+
+|     +-visible-area-------------------------+
+|	  |										 |
+|     |	+----------------------------------+ |
+|     |	| +========+ +--------+ +--------+ | |
+|     |	| |  ref   | |	      | |	     | | |
+|     |	| +========+ +--------+ +--------+ | |
+|     |	+----------------------------------+ |
+|     |	+----------------------------------+ |
+|     |	| +--------+ +--------+ +--------+ | |
+|     |	| | block  | |	      | |	     | | |
+|     |	| +--------+ +--------+ +--------+ | |
+|     |	+----------------------------------+ |
+|     |	+----------------------------------+ |
+|     |	|    			     		 	   | |
+|     |	|    		    row    		       | |
+|     |	|    			     		       | |
+|     |	+----------------------------------+ |
+|	  |										 |
+|     +--------------------------------------+
+|												-+
+|   	+----------------------------------+	 | scroll buffer
+|   	|    			     		 	   |     | (loaded rows)
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|   	+----------------------------------+     |
+|   	|    			     		 	   |     |
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|												-+
+|												-+
+|   	+----------------------------------+     | loading buffer
+|   	|    			     		 	   |     | (rows loading or unloading while scrolling)
+|   	|    		    row    		       |     |
+|   	|    			     		       |     |
+|   	+----------------------------------+     |
+|   	+----------------------------------+     |
+|   	|    			     		       |     |
+|
+|
+	elements
+		view / visible area
+		scroll buffer
+		loading/unloading buffer
+	operation/actions
+		scroll
+		resize
+		filter
+	positioning
+		reference block
+		| a block top-left of the visible area.
+		|
+		| this block must remain in the same position during any operations 
+		| with the content of grid. including:
+		| 	- resizing
+		| 	- filtering
+		|
+		| there is only one exception: arity of the grid -- the top-most row
+		| must always be full. thus moving the reference left of right, but 
+		| never up or down.
+
+.
+| vim:set spell ts=4 sw=4 :