diff --git a/0023-on.keychord_press b/0023-on.keychord_press
index 29e0fbb..9b697fe 100644
--- a/0023-on.keychord_press
+++ b/0023-on.keychord_press
@@ -17,9 +17,7 @@ on.keychord_press = function(chord, key)
 	elseif chord == 'C-z' then
 		dump_state()
 	elseif Cursor_node and Cursor_node.editor.cursor_x then
-		print('cursor before', Cursor_node.editor.cursor1.line, Cursor_node.editor.cursor1.pos)
 		edit.keychord_press(Cursor_node.editor, chord, key)
-		print('cursor after', Cursor_node.editor.cursor1.line, Cursor_node.editor.cursor1.pos)
 		pan_viewport_to_contain_cursor(Cursor_node)
 		A()
 	else
diff --git a/0035-pan_viewport_to_contain_cursor b/0035-pan_viewport_to_contain_cursor
index c498f82..90747f6 100644
--- a/0035-pan_viewport_to_contain_cursor
+++ b/0035-pan_viewport_to_contain_cursor
@@ -1,61 +1,48 @@
 function pan_viewport_to_contain_cursor(node)
-	print('viewport', Viewport.y)
 	local safety_margin = 2*node.editor.line_height
 	cursor1 = {39, 1}
-	print('safety margin', safety_margin, 'dvpx')
-	print('node', node.y)
 	local cursor_sy = node.y + y_of_schema1(node.editor, node.editor.cursor1)/Viewport.zoom
 	if Text.lt1({line=1, pos=1}, node.editor.screen_top1) then
 		Viewport.y = node.y + y_of_schema1(node.editor, node.editor.screen_top1)/Viewport.zoom
 	end
 	if cursor_sy > Viewport.y + App.screen.height/Viewport.zoom - safety_margin then
-		print('cursor below viewport')
 		local cursor_y = y_of_schema1(node.editor, node.editor.cursor1)
 		if Viewport.y < node.y then
 			-- node starts within Viewport
-			print('node starts within viewport')
 			local max_cursor_y = App.screen.height - scale(node.y - Viewport.y) - safety_margin
 			if cursor_y > max_cursor_y then
 				-- set Viewport.y so cursor_y == max_cursor_y
 				-- equation: cursor_y == App.screen.height - (node.y - Viewport.y)*Viewport.zoom - safety_margin
 				-- solve for Viewport.y
 				Viewport.y = node.y - (App.screen.height - cursor_y - safety_margin)/Viewport.zoom
-				print('adjusting Viewport to', Viewport.y)
 			end
 		else
 			-- node extends above Viewport
-			print('node extends above viewport')
 			local screen_top_y = y_of_schema1(node.editor, node.editor.screen_top1)
 			local min_screen_top_y = cursor_y + safety_margin - App.screen.height
 			if screen_top_y < min_screen_top_y then
 				screen_top_y = min_screen_top_y
 				Viewport.y = node.y + screen_top_y/Viewport.zoom
-				print('adjusting Viewport to', Viewport.y)
 			end
 		end
 	elseif cursor_sy < Viewport.y + safety_margin then
-		print('cursor above viewport')
 		local cursor_y = y_of_schema1(node.editor, node.editor.cursor1)
 		if Viewport.y < node.y then
 			-- node starts within Viewport
-			print('node starts within viewport')
 			local max_cursor_y = App.screen.height - scale(node.y - Viewport.y) - safety_margin
 			if cursor_y > max_cursor_y then
 				-- set Viewport.y so cursor_y == max_cursor_y
 				-- equation: cursor_y == App.screen.height - (node.y - Viewport.y)*Viewport.zoom - safety_margin
 				-- solve for Viewport.y
 				Viewport.y = node.y - (App.screen.height - cursor_y - safety_margin)/Viewport.zoom
-				print('adjusting Viewport to', Viewport.y)
 			end
 		else
 			-- node extends above Viewport
-			print('node extends above viewport')
 			local screen_top_y = y_of_schema1(node.editor, node.editor.screen_top1)
 			local max_screen_top_y = cursor_y - safety_margin
 			if screen_top_y > max_screen_top_y then
 				screen_top_y = max_screen_top_y
 				Viewport.y = node.y + screen_top_y/Viewport.zoom
-				print('adjusting Viewport to', Viewport.y)
 			end
 		end
 	end