diff --git a/core b/core
index a2c1c08..9a9a86c 160000
--- a/core
+++ b/core
@@ -1 +1 @@
-Subproject commit a2c1c089c9933b191c5ef4fd1569b3ede80acdd3
+Subproject commit 9a9a86cdacf0cbbcc37eb2db908ec4ade78d3e99
diff --git a/drawing/Common.lua b/drawing/Common.lua
index 7b92ed4..22bf110 100644
--- a/drawing/Common.lua
+++ b/drawing/Common.lua
@@ -44,7 +44,7 @@ M.right_text_style = _G_Widget_.text_style(
 )
 
 local _bare_text = function(pt, text, style)
-   local fmt = _G_Widget_.text_format(false, false, false)
+   local fmt = _G_Widget_.text_format(false, false)
    return _G_Widget_.Text(pt, text, style, fmt)
 end
 
@@ -86,7 +86,7 @@ M.Header = function(x, y, w, s)
             'left',
             'top'
          ),
-         _G_Widget_.text_format(false, false, false)
+         _G_Widget_.text_format(false, false)
       ),
       bottom_y = bottom_y,
       -- underline = _G_Widget_.Line{
@@ -155,8 +155,7 @@ M.initPercentPlot = function(x, y, w, h, spacing, label)
             'center'
          ),
          _G_Widget_.text_format(
-            false,
-            '%',
+            '%s%%',
             false
          ),
          _G_Patterns_.CRITICAL_FG,
@@ -279,7 +278,7 @@ end
 --------------------------------------------------------------------------------
 -- ring with text data in the center
 
-M.initTextRing = function(x, y, r, append_end, limit)
+M.initTextRing = function(x, y, r, fmt, limit)
    return {
 	  ring = M.initRing(x, y, r),
 	  -- value = _G_Widget_.CriticalText{
@@ -302,11 +301,7 @@ M.initTextRing = function(x, y, r, append_end, limit)
             'center',
             'center'
          ),
-         _G_Widget_.text_format(
-            false,
-            append_end,
-            false
-         ),
+         _G_Widget_.text_format(fmt, false),
          _G_Patterns_.CRITICAL_FG,
 		 limit
 	  ),
@@ -428,7 +423,6 @@ M.initTextRowCrit = function(x, y, w, label, append_end, limit)
             'center'
          ),
          _G_Widget_.text_format(
-            false,
             append_end,
             false
          ),
@@ -465,7 +459,7 @@ M.initTextRows = function(x, y, w, spacing, labels)
          _G_Widget_.make_point(x, y),
          labels,
          M.left_text_style,
-         _G_Widget_.text_format(false, false, false),
+         _G_Widget_.text_format(false, false),
          spacing
       ),
       -- values = _G_Widget_.TextColumn{
@@ -482,7 +476,7 @@ M.initTextRows = function(x, y, w, spacing, labels)
          _G_Widget_.make_point(x + w, y),
          #labels,
          M.right_text_style,
-         _G_Widget_.text_format(false, false, false),
+         _G_Widget_.text_format(false, false),
          spacing
       )
    }
diff --git a/drawing/FileSystem.lua b/drawing/FileSystem.lua
index f1d3ec0..20efaa1 100644
--- a/drawing/FileSystem.lua
+++ b/drawing/FileSystem.lua
@@ -99,7 +99,7 @@ local labels = _G_Widget_.TextColumn(
       'left',
       'center'
    ),
-   _G_Widget_.text_format(false, false, false),
+   _G_Widget_.text_format(false, false),
    _SPACING_
 )
 
diff --git a/drawing/Graphics.lua b/drawing/Graphics.lua
index 6ef7730..0fbccbc 100644
--- a/drawing/Graphics.lua
+++ b/drawing/Graphics.lua
@@ -43,7 +43,7 @@ local internal_temp = Common.initTextRowCrit(
    _INTERNAL_TEMP_Y_,
    _G_INIT_DATA_.SECTION_WIDTH,
    'Internal Temperature',
-   '°C',
+   '%s°C',
    80
 )
 
diff --git a/drawing/Memory.lua b/drawing/Memory.lua
index 20e073b..280edcb 100644
--- a/drawing/Memory.lua
+++ b/drawing/Memory.lua
@@ -86,7 +86,7 @@ local text_ring = Common.initTextRing(
    DIAL_X,
    DIAL_Y,
    DIAL_RADIUS - _DIAL_THICKNESS_ / 2 - 2,
-   '%',
+   '%s%%',
    80
 )
 
@@ -100,7 +100,7 @@ local swap = Common.initTextRowCrit(
    -- TODO this is silly
    _RIGHT_X_ - _TEXT_LEFT_X_,
    'Swap Usage',
-   ' %',
+   '%s%%',
    80
 )
 
@@ -143,7 +143,7 @@ local cache = {
          'left',
          'center'
       ),
-      _G_Widget_.text_format(false, false, false),
+      _G_Widget_.text_format(false, false),
       _TEXT_SPACING_
    ),
    percents = _G_Widget_.initTextColumnN(
@@ -158,7 +158,7 @@ local cache = {
          'right',
          'center'
       ),
-      _G_Widget_.text_format(false, '%', false),
+      _G_Widget_.text_format('%s%%', false),
       _TEXT_SPACING_
    ),
 }
diff --git a/drawing/Processor.lua b/drawing/Processor.lua
index ceebd64..2e524ea 100644
--- a/drawing/Processor.lua
+++ b/drawing/Processor.lua
@@ -87,7 +87,7 @@ local _create_core_ = function(cores, id, x, y)
          x,
          y,
          _DIAL_INNER_RADIUS_ - 2,
-		 '°C',
+		 '%s°C',
 		 90
       ),
 	  coretemp_path = string.format(CORETEMP_PATH, hwmon_index, 'temp'..(id + 2)..'_input'),