diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
index cf35ae2..c846d38 100755
--- a/CONTRIBUTING.md
+++ b/CONTRIBUTING.md
@@ -52,9 +52,9 @@ Rightmost vertical column (should be 20 px tall) contains the tags. Tags are def
       K -'
       Q ---Compiler Directive (see below)
       n --,
-      X -, `-Nudging Bits (see below)
+      Y -, `-Nudging Bits (see below)
       X  |
-      X  |= Diacritics Anchor Points (see below)
+      Y  |= Diacritics Anchor Points (see below)
       X -'  
       A -,_ 0 Align  1 Align  0 Align   1 Align before
       A -'  0 left   0 right  1 centre  1 the glyph
@@ -62,12 +62,6 @@ Rightmost vertical column (should be 20 px tall) contains the tags. Tags are def
       S -,_ 0 Stack  1 Stack  0 Before  1 Up &
 (MSB) S -'  0 up     0 down   1 &After  1 Down (e.g. U+0C48)
 
-TODO:
-c - Nudging
-Y - Anchor point Y for undefined, undefined, undefined
-X - Anchor point X for undefined, undefined, undefined
-Y - Anchor point Y for (unused), undefined, undefined
-X - Anchor point X for Type-0 (centre-aligned) diacritics, undefined, undefined
 
 * Nudging Bits Encoding:
 
@@ -79,6 +73,15 @@ Y-positive: nudges towards up
 
 * Diacritics Anchor Point Encoding:
 
+4 Pixels are further divided as follows:
+
+(LSB)
+Y - Anchor point Y for undefined, undefined, undefined
+X - Anchor point X for undefined, undefined, undefined
+Y - Anchor point Y for (unused), undefined, undefined
+X - Anchor point X for Type-0 (centre-aligned) diacritics, undefined, undefined
+(MSB)
+
     <MSB,Red> 1Y1Y1Y1Y 1Y2Y2Y2Y 1Y3Y3Y3Y <LSB,Blue>
     <MSB,Red> 1X1X1X1X 1X2X2X2X 1X3X3X3X <LSB,Blue>
 
diff --git a/assets/halfwidth_fullwidth_variable.tga b/assets/halfwidth_fullwidth_variable.tga
index 9ac2bc0..930c600 100644
--- a/assets/halfwidth_fullwidth_variable.tga
+++ b/assets/halfwidth_fullwidth_variable.tga
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:fd9cc0d58fa757073ff1855be7b037de138192b201862a9112581ebe1dde0007
+oid sha256:96d89ef072717963cf19862d22397b3e45e5fd8343de7063b33ee40f08abf8d5
 size 327698
diff --git a/work_files/halfwidth_fullwidth_variable.psd b/work_files/halfwidth_fullwidth_variable.psd
index 44e1ea3..110ee36 100644
--- a/work_files/halfwidth_fullwidth_variable.psd
+++ b/work_files/halfwidth_fullwidth_variable.psd
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:ea91f8c0543273b226ce6e0b3efd29966ca8d705b4079658ad74ec029155ec4a
-size 365598
+oid sha256:e6b49faa784f60e01ebb4a8072cd6838dcebdc8b3c61a7b3b08ce2b1d94b4473
+size 365724