diff --git a/0008-Viewport b/0008-Viewport
index 0dc66df..770f1e8 100644
--- a/0008-Viewport
+++ b/0008-Viewport
@@ -1 +1 @@
-Viewport = {x=-50, y=-50, w=800,h=600, zoom=1.0}
\ No newline at end of file
+Viewport = {x=-50, y=-50, w=800,h=600, zoom=0.4}
diff --git a/0011-box_height b/0011-box_height
index 794a812..38259d2 100644
--- a/0011-box_height
+++ b/0011-box_height
@@ -1,16 +1,16 @@
 box_height = function(node)
-	-- return the height of a text editor node (explicit width). The result is unscaled.
-	local y = 0
+	-- return the height of a text editor node (explicit width). The result is scaled.
+	local count = 0
 	for i=1,#node.editor.lines do
 		local line = node.editor.lines[i]
 		if node.editor.line_cache[i] == nil then
 			node.editor.line_cache[i] = {}
 		end
-		node.editor.line_cache[i].fragments = nil
 		node.editor.line_cache[i].screen_line_starting_pos = nil
 		Text.populate_screen_line_starting_pos(node.editor, i)
-		y = y + node.editor.line_height*#node.editor.line_cache[i].screen_line_starting_pos
+		count = count + #node.editor.line_cache[i].screen_line_starting_pos
 		Text.clear_screen_line_cache(node.editor, i)
 	end
-	return y
+	print(count, '*', node.editor.line_height, '=', count*node.editor.line_height)
+	return count*node.editor.line_height/Viewport.zoom
 end
diff --git a/0019-B b/0019-B
index 7e7d0c7..fb97261 100644
--- a/0019-B
+++ b/0019-B
@@ -1,4 +1,5 @@
 B = function()
+	print('B')
 	-- recompute various aspects based on the current viewport settings
 	for _,obj in ipairs(Surface) do
 		if obj.type == 'line' then
diff --git a/0020-Page b/0020-Page
index 33c7966..767b025 100644
--- a/0020-Page
+++ b/0020-Page
@@ -9,37 +9,68 @@ Page = {
         doc='prose goes here, on the left half of the window',
         margin=Margin_left,
         data={
-			"Lorem Ipsum has been the industry's standard dummy text ever since the 1500s, when an unknown printer took a galley of type and scrambled it to make a type specimen book. It has survived not only five centuries, but also the leap into electronic typesetting, remaining essentially unchanged. It was popularised in the 1960s with the release of Letraset sheets containing Lorem Ipsum passages, and more recently with desktop publishing software like Aldus PageMaker including versions of Lorem Ipsum.",
-			'1',
-			'2',
-			'3',
-			'mno',
-			'Acb',
-			'g',
-			'hij',
-			'klm',
-			'nop',
+'1',
+'2',
+'3',
+'4',
+'5',
+'6',
+'7',
+'8',
+'9',
+'10',
+'11',
+'12',
+'13',
+'14',
+'15',
+'16',
+'17',
+'18',
+'19',
+'20',
+'21',
+'22',
+'23',
+'24',
+'25',
+'26',
+'27',
+'28',
+'29',
+'30',
+'31',
+'32',
+'33',
+'34',
+'35',
+'36',
+'37',
+'38',
+'39',
+'40',
+'41',
+'42',
+'43',
+'44',
+'45',
+'46',
+'47',
+'48',
+'49',
+'50',
+'51',
+'52',
+'53',
+'54',
+'55',
+'56',
+'57',
+'58',
+'59',
+'60',
 		},
         width=400, bg={r=1,g=1,b=0}
       },
-      -- a table on the right
-      { type='rows', name='searches', margin=50, data={
-        { type='text', data={''},},
-        { type='cols', data={
-          { type='text', data={'search:'},},
-          { type='text', name='search', bg={r=0.8,g=0.8,b=0.8}, data={''}, width=90,},
-        }},
-		{ type='text', data={'table:'},},
-        { type='cols', bg={r=0.8,g=0.8,b=0.8}, data={
-            { type='rows', width=90, data={
-              {type='text', data={'abc'},},
-              {type='text', data={'abc'},},
-            }},
-            { type='rows', width=90, data={
-              {type='text', data={'def'},},
-              {type='text', data={'def'},},
-            }},
-        }},
-      }},
     },
-}
\ No newline at end of file
+}
diff --git a/0026-on.draw b/0026-on.draw
index d569a9a..340fced 100644
--- a/0026-on.draw
+++ b/0026-on.draw
@@ -1,5 +1,10 @@
 on.draw = function()
-	love.graphics.setColor(1,0,0)
+	love.graphics.setColor(0,0,0)
+	love.graphics.line(vx(0), vy(0), vx(0), vy(1000000))
+	love.graphics.line(vx(0), vy(0), vx(1000000), vy(0))
+	for i=1,100 do
+		love.graphics.print(tostring(i), vx(0), vy(i*1000))
+	end
 	for _,obj in ipairs(Surface) do
 		love.graphics.setColor(obj.r or 0, obj.g or 0, obj.b or 0)
 		if obj.type == 'rectangle' then
@@ -18,6 +23,7 @@ on.draw = function()
 			if obj.w == nil then
 				love.graphics.draw(obj.text, vx(obj.x), vy(obj.y))
 			else
+				print(obj.x, obj.y, obj.editor.top, obj.editor.screen_top1.line)
 				edit.draw(obj.editor, obj.fg or {r=0,g=0,b=0}, not obj.show_cursor)
 			end
 		end
diff --git a/0027-Surface b/0027-Surface
index 4c79c0f..9a7cf0d 100644
--- a/0027-Surface
+++ b/0027-Surface
@@ -1,12 +1,2 @@
 Surface = {
-  -- test data
-  {type='line', data={0,-1000, 0,1000}},
-  {type='line', data={-10000,0, 10000,0}},
-  {type='text', data={'0'}, x=-20,y=-30},
-  {type='rectangle', x=50,y=50, w=20,h=80, r=1,g=0,b=0},
-  {type='text', data={'abc', 'def'}, x=150, y=50, w=50,h=50, fg={r=0,g=0.4, b=0.9}},
-  {type='circle', x=300,y=200, radius=40, r=1,g=0,b=1},
-  {type='arc', x=0,y=0, radius=50, angle1=0, angle2=math.pi*2/3},
-  {type='ellipse', x=100,y=100, radiusx=10, radiusy=50},
-  {type='bezier', data={25,25, 25,125, 75,25, 125,25}},
-}
\ No newline at end of file
+}
diff --git a/0028-A b/0028-A
index c501e0b..131f735 100644
--- a/0028-A
+++ b/0028-A
@@ -1,16 +1,8 @@
 A = function()
+	print('A')
 	love.graphics.setFont(love.graphics.newFont(scale(20)))  -- editor objects implicitly depend on current font
 	-- translate Page to Surface
-	while #Surface > 3 do table.remove(Surface) end  -- HACK
-	local red = false
-	for x=-1000,2000,300 do
-		for y=-10000,10000,200 do
-			add_thick_line({type='line', data={x,y, x+200,y+200, x,y+400}, r=red and 1 or 0,g=red and 0 or 0.5,b=0}, 10)
-			red = not red
-		end
-	end
 	compute_layout(Page, Page.x,Page.y, Surface)
-	compute_layout(Page2, Page2.x,Page2.y, Surface)
 	-- continue the pipeline
 	B()
 	-- TODO: ugly that we're manipulating editor objects twice
diff --git a/0029-Page2 b/0029-Page2
deleted file mode 100644
index 61735e5..0000000
--- a/0029-Page2
+++ /dev/null
@@ -1,9 +0,0 @@
-Page2 = {
-	x=500, y=300,
-    -- page
-		type='text',
-        data={
-"Call me Ishmael.  Some years ago--never mind how long precisely--having little or no money in my purse, and nothing particular to interest me on shore, I thought I would sail about a little and see the watery part of the world.  It is a way I have of driving off the spleen and regulating the circulation.  Whenever I find myself growing grim about the mouth; whenever it is a damp, drizzly November in my soul; whenever I find myself involuntarily pausing before coffin warehouses, and bringing up the rear of every funeral I meet; and especially whenever my hypos get such an upper hand of me, that it requires a strong moral principle to prevent me from deliberately stepping into the street, and methodically knocking people's hats off--then, I account it high time to get to sea as soon as I can.  This is my substitute for pistol and ball.  With a philosophical flourish Cato throws himself upon his sword; I quietly take to the ship.  There is nothing surprising in this.  If they but knew it, almost all men in their degree, some time or other, cherish very nearly the same feelings towards the ocean with me."
-		},
-        width=400, bg={r=0,g=0.8,b=0}
-}
\ No newline at end of file
diff --git a/0030-update_editor_box b/0030-update_editor_box
index 5808946..148184e 100644
--- a/0030-update_editor_box
+++ b/0030-update_editor_box
@@ -7,7 +7,7 @@ update_editor_box = function(node)
 		end
 		node.editor.top = vy(node.y)
 	else
-		node.editor.screen_top1, node.editor.top = schema1_of_y(node.editor, Viewport.y-node.y)
+		node.editor.screen_top1, node.editor.top = schema1_of_y(node.editor, scale(Viewport.y-node.y))
 	end
 	node.editor.left = math.floor(vx(node.x))
 	node.editor.right = math.ceil(vx(node.x+node.w))