diff --git a/lib/cyberarm_engine.rb b/lib/cyberarm_engine.rb
index 41727c5..3952397 100644
--- a/lib/cyberarm_engine.rb
+++ b/lib/cyberarm_engine.rb
@@ -8,6 +8,7 @@ require "json"
 require "gosu_more_drawables"
 
 require_relative "cyberarm_engine/version"
+require_relative "cyberarm_engine/stats"
 
 require_relative "cyberarm_engine/common"
 
diff --git a/lib/cyberarm_engine/stats.rb b/lib/cyberarm_engine/stats.rb
new file mode 100644
index 0000000..9a9205a
--- /dev/null
+++ b/lib/cyberarm_engine/stats.rb
@@ -0,0 +1,21 @@
+module CyberarmEngine
+  class Stats
+    @@hash = {
+      gui_recalculations_last_frame: 0
+    }
+
+    def self.get(key)
+      @@hash.dig(key)
+    end
+
+    def self.increment(key, n)
+      @@hash[key] += n
+    end
+
+    def self.clear
+      @@hash.each do |key, value|
+        @@hash[key] = 0
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/lib/cyberarm_engine/text.rb b/lib/cyberarm_engine/text.rb
index 0dbeea9..2c11693 100644
--- a/lib/cyberarm_engine/text.rb
+++ b/lib/cyberarm_engine/text.rb
@@ -9,7 +9,7 @@ module CyberarmEngine
       @text = text.to_s || ""
       @options = options
       @size = options[:size] || 18
-      @font = options[:font] || "sans-serif"#Gosu.default_font_name
+      @font = options[:font] || Gosu.default_font_name
       @x = options[:x] || 0
       @y = options[:y] || 0
       @z = options[:z] || 1025
@@ -98,12 +98,12 @@ module CyberarmEngine
       @shadow_color = n
     end
 
-    def width
-      textobject.text_width(@text)
+    def width(text = @text)
+      textobject.text_width(text)
     end
 
-    def height
-      @text.lines.count > 0 ? (@text.lines.count) * textobject.height : @textobject.height
+    def height(text = @text)
+      text.lines.count > 0 ? (text.lines.count) * textobject.height : @textobject.height
     end
 
     def draw
diff --git a/lib/cyberarm_engine/ui/element.rb b/lib/cyberarm_engine/ui/element.rb
index 272aecc..58a4b81 100644
--- a/lib/cyberarm_engine/ui/element.rb
+++ b/lib/cyberarm_engine/ui/element.rb
@@ -219,7 +219,7 @@ module CyberarmEngine
       raise "dimension must be either :width or :height" unless dimension == :width || dimension == :height
       if size && size.is_a?(Numeric)
         if size.between?(0.0, 1.0)
-          ((@parent.send(:"content_#{dimension}") - self.send(:"noncontent_#{dimension}") - 1) * size).round
+          ((@parent.send(:"content_#{dimension}") - self.send(:"noncontent_#{dimension}")) * size).round
         else
           size
         end
@@ -246,6 +246,8 @@ module CyberarmEngine
     end
 
     def root
+      return self if is_root?
+
       unless @root && @root.parent.nil?
         @root = parent
 
@@ -279,5 +281,9 @@ module CyberarmEngine
     def value=(value)
       raise "#{self.class}#value= was not overridden!"
     end
+
+    def to_s
+      "#{self.class} x=#{x} y=#{y} width=#{width} height=#{height} value=#{ value.is_a?(String) ? "\"#{value}\"" : value }"
+    end
   end
 end
\ No newline at end of file
diff --git a/lib/cyberarm_engine/ui/elements/check_box.rb b/lib/cyberarm_engine/ui/elements/check_box.rb
index fa4aacc..47958dc 100644
--- a/lib/cyberarm_engine/ui/elements/check_box.rb
+++ b/lib/cyberarm_engine/ui/elements/check_box.rb
@@ -2,7 +2,7 @@ module CyberarmEngine
   class Element
     class CheckBox < Flow
       def initialize(text, options, block = nil)
-        super({}, block = nil)
+        super(options, block)
         options[:toggled] = options[:checked]
 
         @toggle_button = ToggleButton.new(options)
diff --git a/lib/cyberarm_engine/ui/elements/container.rb b/lib/cyberarm_engine/ui/elements/container.rb
index 87a6d13..35058f3 100644
--- a/lib/cyberarm_engine/ui/elements/container.rb
+++ b/lib/cyberarm_engine/ui/elements/container.rb
@@ -22,13 +22,13 @@ module CyberarmEngine
       def build
         @block.call(self) if @block
 
-        recalculate
+        root.gui_state.request_recalculate
       end
 
       def add(element)
         @children << element
 
-        recalculate
+        root.gui_state.request_recalculate
       end
 
       def clear(&block)
@@ -41,7 +41,6 @@ module CyberarmEngine
 
         $__current_container__ = old_container
 
-        recalculate
         root.gui_state.request_recalculate
       end
 
@@ -75,6 +74,9 @@ module CyberarmEngine
       def recalculate
         @current_position = Vector.new(@style.margin_left + @style.padding_left, @style.margin_top + @style.padding_top)
         return unless visible?
+
+        Stats.increment(:gui_recalculations_last_frame, 1)
+
         stylize
 
         layout
@@ -92,7 +94,6 @@ module CyberarmEngine
           @height = _height ? _height : (@children.map {|c| c.y + c.outer_height}.max || 0).round
         end
 
-
         # Move child to parent after positioning
         @children.each do |child|
           child.x += (@x + @style.border_thickness_left) - style.margin_left
@@ -101,6 +102,8 @@ module CyberarmEngine
           child.stylize
           child.recalculate
           child.reposition # TODO: Implement top,bottom,left,center, and right positioning
+
+          Stats.increment(:gui_recalculations_last_frame, 1)
         end
 
         update_background
@@ -110,13 +113,13 @@ module CyberarmEngine
         raise "Not overridden"
       end
 
-      # TODO: Fix @max_width no longer exists
       def max_width
-        @max_width ? @max_width : window.width - (@parent ? @parent.style.margin_right + @style.margin_right : @style.margin_right)
+        _width = dimensional_size(@style.width, :width)
+        _width ? outer_width : window.width - (@parent ? @parent.style.margin_right + @style.margin_right : @style.margin_right)
       end
 
-      # TODO: Fix container automatic width (0.0..1.0) not considered
       def fits_on_line?(element) # Flow
+        p [@options[:id], @width] if @options[:id]
         @current_position.x + element.outer_width <= max_width &&
         @current_position.x + element.outer_width <= window.width
       end
@@ -175,6 +178,25 @@ module CyberarmEngine
       def value
         @children.map {|c| c.class}.join(", ")
       end
+
+      def to_s
+        "#{self.class} x=#{x} y=#{y} width=#{width} height=#{height} children=#{@children.size}"
+      end
+
+      def write_tree(indent = "", index = 0)
+        puts self
+
+        indent = indent + "  "
+        @children.each_with_index do |child, i|
+          print "#{indent}#{i}: "
+
+          if child.is_a?(Container)
+            child.write_tree(indent)
+          else
+            puts child
+          end
+        end
+      end
     end
   end
 end
diff --git a/lib/cyberarm_engine/ui/elements/edit_line.rb b/lib/cyberarm_engine/ui/elements/edit_line.rb
index 62c66a1..df74162 100644
--- a/lib/cyberarm_engine/ui/elements/edit_line.rb
+++ b/lib/cyberarm_engine/ui/elements/edit_line.rb
@@ -100,6 +100,22 @@ module CyberarmEngine
         end
       end
 
+      def caret_position
+        text_input_position_for(:caret_pos)
+      end
+
+      def selection_start_position
+        text_input_position_for(:selection_start)
+      end
+
+      def text_input_position_for(method)
+        if @type == :password
+          @text.x + @text.width(default(:password_character) * @text_input.text[0..@text_input.send(method)].length)
+        else
+          @text.x + @text.width(@text_input.text[0..@text_input.send(method)])
+        end
+      end
+
       def left_mouse_button(sender, x, y)
         super
         window.text_input = @text_input
@@ -141,22 +157,6 @@ module CyberarmEngine
         return :handled
       end
 
-      def caret_position
-        text_input_position_for(:caret_pos)
-      end
-
-      def selection_start_position
-        text_input_position_for(:selection_start)
-      end
-
-      def text_input_position_for(method)
-        if @type == :password
-          @text.x + @text.textobject.text_width(default(:password_character) * @text_input.text[0..@text_input.send(method)].length)
-        else
-          @text.x + @text.textobject.text_width(@text_input.text[0..@text_input.send(method)])
-        end
-      end
-
       def recalculate
         super
 
diff --git a/lib/cyberarm_engine/ui/elements/flow.rb b/lib/cyberarm_engine/ui/elements/flow.rb
index 76ce972..9574f5c 100644
--- a/lib/cyberarm_engine/ui/elements/flow.rb
+++ b/lib/cyberarm_engine/ui/elements/flow.rb
@@ -1,8 +1,6 @@
 module CyberarmEngine
   class Element
     class Flow < Container
-      include Common
-
       def layout
         @children.each do |child|
           if fits_on_line?(child)
diff --git a/lib/cyberarm_engine/ui/elements/slider.rb b/lib/cyberarm_engine/ui/elements/slider.rb
index 91cd67a..7850819 100644
--- a/lib/cyberarm_engine/ui/elements/slider.rb
+++ b/lib/cyberarm_engine/ui/elements/slider.rb
@@ -52,16 +52,20 @@ module CyberarmEngine
         @width  = _width
         @height = _height
 
-        @handle.x = @x + @style.border_thickness_left + @style.padding_left
-        @handle.y = @y + @style.border_thickness_top + @style.padding_top
+        position_handle
         @handle.recalculate
         @handle.update_background
 
-        # pp @handle.height
-
         update_background
       end
 
+      def position_handle
+        @handle.x = @x + @style.padding_left + @style.border_thickness_left +
+          ((content_width - @handle.outer_width) * (@value - @range.min) / (@range.max - @range.min).to_f)
+
+        @handle.y = @y + @style.border_thickness_top + @style.padding_top
+      end
+
       def draw
         super
 
@@ -82,13 +86,9 @@ module CyberarmEngine
       end
 
       def handle_dragged_to(x, y)
-        puts
-        pp x, y, @handle.width, content_width
-        @ratio = ((x - @handle.width) - @x) / content_width
+        @ratio = ((x - @handle.width / 2) - @x) / (content_width - @handle.outer_width)
 
-        # p [@ratio, @value]
         self.value = @ratio.clamp(0.0, 1.0) * (@range.max - @range.min) + @range.min
-
       end
 
       def value
@@ -97,9 +97,7 @@ module CyberarmEngine
 
       def value=(n)
         @value = n
-        @handle.x = @x + @style.padding_left + @style.border_thickness_left +
-                    (content_width * (@value - @range.min) / (@range.max - @range.min).to_f)
-
+        position_handle
         @handle.recalculate
 
         publish(:changed, @value)
diff --git a/lib/cyberarm_engine/ui/elements/stack.rb b/lib/cyberarm_engine/ui/elements/stack.rb
index 3d01c0c..ae93925 100644
--- a/lib/cyberarm_engine/ui/elements/stack.rb
+++ b/lib/cyberarm_engine/ui/elements/stack.rb
@@ -1,8 +1,6 @@
 module CyberarmEngine
   class Element
     class Stack < Container
-      include Common
-
       def layout
         @children.each do |child|
           move_to_next_line(child)
diff --git a/lib/cyberarm_engine/ui/gui_state.rb b/lib/cyberarm_engine/ui/gui_state.rb
index 9f3e82d..b45185b 100644
--- a/lib/cyberarm_engine/ui/gui_state.rb
+++ b/lib/cyberarm_engine/ui/gui_state.rb
@@ -51,6 +51,7 @@ module CyberarmEngine
 
     def update
       if @pending_recalculate_request
+        @root_container.recalculate
         @root_container.recalculate
         @pending_recalculate_request = false
       end
@@ -104,6 +105,8 @@ module CyberarmEngine
         redirect_mouse_button(:middle)
       when Gosu::MsRight
         redirect_mouse_button(:right)
+      when Gosu::KbF5
+        request_recalculate
       end
     end
 
diff --git a/lib/cyberarm_engine/ui/theme.rb b/lib/cyberarm_engine/ui/theme.rb
index ed5f1e9..2a26e65 100644
--- a/lib/cyberarm_engine/ui/theme.rb
+++ b/lib/cyberarm_engine/ui/theme.rb
@@ -88,7 +88,7 @@ module CyberarmEngine
         caret_width: 2,
         caret_color: Gosu::Color::WHITE,
         caret_interval: 500,
-        selection_color: Gosu::Color::GREEN,
+        selection_color: Gosu::Color.rgba(255, 128, 50, 200),
       },
 
       Image: { # < Element
diff --git a/lib/cyberarm_engine/window.rb b/lib/cyberarm_engine/window.rb
index c166903..d1be708 100644
--- a/lib/cyberarm_engine/window.rb
+++ b/lib/cyberarm_engine/window.rb
@@ -34,6 +34,8 @@ module CyberarmEngine
     end
 
     def update
+      Stats.clear
+
       current_state.update if current_state
       @last_frame_time = Gosu.milliseconds-@current_frame_time
       @current_frame_time = Gosu.milliseconds