--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/doc/src/diagrams/treemodel-structure.sk	Mon Jan 11 14:00:40 2010 +0000
@@ -0,0 +1,114 @@
+##Sketch 1 2
+document()
+layout('A4',0)
+layer('Layer 1',1,1,0,0,(0,0,0))
+le()
+lw(1)
+r(165,0,0,-300,30,785)
+lw(1)
+ld((3, 3))
+b()
+bs(55,520,0)
+bs(55,495,0)
+lw(1)
+ld((5, 5))
+r(30,0,0,-30,40,775)
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica-Bold')
+txt('Root item (empty)',(80,756.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 0',(110,716.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 0',(145,676.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+Fs(20)
+txt('A',(83.33,713.14))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+Fs(20)
+txt('B',(118.33,633.14))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+Fs(20)
+txt('C',(82.78,553.14))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 1',(145,636.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 1',(110,556.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 2',(145,596.384))
+fp((0,0,0))
+le()
+lw(1)
+Fn('Helvetica')
+txt('row = 2',(110,516.384))
+lw(1)
+b()
+bs(55,745,0)
+bs(55,520,0)
+lw(1)
+r(30,0,0,-30,110,695)
+lw(1)
+b()
+bs(90,680,0)
+bs(110,680,0)
+lw(1)
+r(30,0,0,-30,110,655)
+lw(1)
+r(30,0,0,-30,110,615)
+lw(1)
+r(30,0,0,-30,75,535)
+lw(1)
+r(30,0,0,-30,75,575)
+lw(1)
+b()
+bs(90,640,0)
+bs(110,640,0)
+lw(1)
+b()
+bs(90,600,0)
+bs(110,600,0)
+lw(1)
+b()
+bs(55,520,0)
+bs(75,520,0)
+lw(1)
+b()
+bs(55,560,0)
+bs(75,560,0)
+lw(1)
+b()
+bs(90,705,0)
+bs(90,600,0)
+lw(1)
+r(30,0,0,-30,75,735)
+lw(1)
+b()
+bs(55,720,0)
+bs(75,720,0)
+guidelayer('Guide Lines',1,0,0,1,(0,0,1))
+grid((0,0,2.5,2.5),1,(0,0,1),'Grid')