diff --git a/0011-on.initialize b/0011-on.initialize
index 456329f..b35d3a7 100644
--- a/0011-on.initialize
+++ b/0011-on.initialize
@@ -5,17 +5,7 @@ on.initialize = function()
 	Menu_left, Menu_top, Safe_width, Safe_height = love.window.getSafeArea()
 	Menu_height = 5 + Line_height + 5
 	Menu_bottom = Menu_top + Menu_height
-	Current_pane.editor_state = edit.initialize_state(
-		Menu_bottom + 20,  -- top
-		Safe_height/2-Line_height,  -- bottom
-		Menu_left + 50 + Line_number_padding,  -- left
-		math.min(100+30*App.width('m'), Safe_width*2/3),  -- right
-		love.graphics.getFont():getHeight(), Line_height)
-	Text.redraw_all(Current_pane.editor_state)
-	Current_pane.output_editor_state = edit.initialize_state(
-		Current_pane.editor_state.bottom+5+10+5,  -- top
-		nil,  -- buttom
-		Current_pane.editor_state.left, Current_pane.editor_state.right,
-		love.graphics.getFont():getHeight(), Line_height)
-	Text.redraw_all(Current_pane.output_editor_state)
+	table.insert(Panes, new_pane())
+	Current_pane_index = 1
+	Current_pane = Panes[Current_pane_index]
 end
\ No newline at end of file
diff --git a/0021-draw_menu b/0021-draw_menu
index 6ee2bbb..f73586d 100644
--- a/0021-draw_menu
+++ b/0021-draw_menu
@@ -42,17 +42,41 @@ draw_menu = function()
 		end,
 	})
 	-- nav buttons along sides
-	button(Global_state, 'left', {x=0, y=Menu_bottom, w=Menu_left+30, h=App.screen.height, bg={r=0.5, g=0.5, b=0.5, a=0.2},
-		icon = function(p)
-			App.color{r=0.4,g=0.4,b=0.4}
-			love.graphics.polygon('fill', Menu_left+5, App.screen.height/2, Menu_left+25, App.screen.height/2-10, Menu_left+25, App.screen.height/2+10)
-		end,
-	})
+	if Current_pane_index > 1 then
+		button(Global_state, 'left', {x=0, y=Menu_bottom, w=Menu_left+30, h=App.screen.height, bg={r=0.5, g=0.5, b=0.5, a=0.2},
+			icon = function(p)
+				App.color{r=0.4,g=0.4,b=0.4}
+				love.graphics.polygon('fill', Menu_left+5, App.screen.height/2, Menu_left+25, App.screen.height/2-10, Menu_left+25, App.screen.height/2+10)
+			end,
+			onpress1 = function()
+				Current_pane_index = Current_pane_index-1
+				Current_pane = Panes[Current_pane_index]
+			end,
+		})
+	end
 	local r = Menu_left + Safe_width
-	button(Global_state, 'left', {x=r-30, y=Menu_bottom, w=100, h=App.screen.height, bg={r=0.5, g=0.5, b=0.5, a=0.2},
-		icon = function(p)
-			App.color{r=0.4,g=0.4,b=0.4}
-			love.graphics.polygon('fill', r-25, App.screen.height/2-10, r-25, App.screen.height/2+10,  r-5, App.screen.height/2)
-		end,
-	})
+	if Current_pane_index == #Panes then
+		button(Global_state, 'right', {x=r-30, y=Menu_bottom, w=100, h=App.screen.height, bg={r=0.5, g=0.5, b=0.5, a=0.2},
+			icon = function(p)
+				App.color{r=0.4,g=0.4,b=0.4}
+				love.graphics.print('+', r-25, App.screen.height/2-10)
+			end,
+			onpress1 = function()
+				table.insert(Panes, new_pane())
+				Current_pane_index = Current_pane_index+1
+				Current_pane = Panes[Current_pane_index]
+			end,
+		})
+	else
+		button(Global_state, 'right', {x=r-30, y=Menu_bottom, w=100, h=App.screen.height, bg={r=0.5, g=0.5, b=0.5, a=0.2},
+			icon = function(p)
+				App.color{r=0.4,g=0.4,b=0.4}
+				love.graphics.polygon('fill', r-25, App.screen.height/2-10, r-25, App.screen.height/2+10,  r-5, App.screen.height/2)
+			end,
+			onpress1 = function()
+				Current_pane_index = Current_pane_index+1
+				Current_pane = Panes[Current_pane_index]
+			end,
+		})
+	end
 end
\ No newline at end of file
diff --git a/0047-Current_pane_index b/0047-Current_pane_index
new file mode 100644
index 0000000..d565b4e
--- /dev/null
+++ b/0047-Current_pane_index
@@ -0,0 +1 @@
+Current_pane_index = 0
\ No newline at end of file
diff --git a/0048-Panes b/0048-Panes
new file mode 100644
index 0000000..f1e0c80
--- /dev/null
+++ b/0048-Panes
@@ -0,0 +1 @@
+Panes = {}
\ No newline at end of file
diff --git a/0049-new_pane b/0049-new_pane
new file mode 100644
index 0000000..65240ee
--- /dev/null
+++ b/0049-new_pane
@@ -0,0 +1,17 @@
+new_pane = function()
+	local result = {}
+	result.editor_state = edit.initialize_state(
+			Menu_bottom + 20,  -- top
+			Safe_height/2-Line_height,  -- bottom
+			Menu_left + 50 + Line_number_padding,  -- left
+			math.min(100+30*App.width('m'), Safe_width*2/3),  -- right
+			love.graphics.getFont():getHeight(), Line_height)
+	Text.redraw_all(result.editor_state)
+	result.output_editor_state = edit.initialize_state(
+			result.editor_state.bottom+5+10+5,  -- top
+			nil,  -- buttom
+			result.editor_state.left, result.editor_state.right,
+			love.graphics.getFont():getHeight(), Line_height)
+	Text.redraw_all(result.output_editor_state)
+	return result
+end
\ No newline at end of file