diff --git a/README.md b/README.md
index 42c6b9a..56cc7c4 100644
--- a/README.md
+++ b/README.md
@@ -1,6 +1,6 @@
 #Apple ]\[ HGR Font Tutorial
 
-Revision: 5, Jan 10, 2016.
+Revision: 6, Jan 10, 2016.
 
 # Table of Contents
 
@@ -124,27 +124,116 @@ There are couple of things we need to discuss first. The preceeding example show
 
 First, we should notice that video memory is non-linear. :-( You'll want to get familiar with the HGR address for the various Y scanlines:
 
+"Understanding the Apple ||{, page 5-14 has this table:
 * https://archive.org/stream/understanding_the_apple_ii#page/n105/mode/2up
 
+With all the decimal cruft removed:
 
-|Y  |Address|
-|--:|------:|
-|  0| $2000 |
-|  1| $2400 |
-|  2| $2800 |
-|  3| $2C00 |
-|  4| $3000 |
-|  5| $3400 |
-|  6| $3800 |
-|  7| $3C00 |
-|  8| $2080 |
-|  :|     : |
-| 64| $2028 |
-|128| $2050 |
-|191| $3FD0 |
+`HGR Memory-mapped IO`:
+
+| Y   |Address| Y   |Address| Y   |Address| Screen Hole  |
+|----:|:-----:|----:|-------|----:|:-----:|:------------:|
+|   0 | $2000 |  64 | $2028 | 128 | $2050 | $2078..$207F |
+|   1 | $2400 |  65 | $2428 | 129 | $2450 | $2478..$247F |
+|   2 | $2800 |  66 | $2828 | 130 | $2850 | $2878..$287F |
+|   3 | $2C00 |  67 | $2C28 | 131 | $2C50 | $2C78..$2C7F |
+|   4 | $3000 |  68 | $3028 | 132 | $3050 | $3078..$307F |
+|   5 | $3400 |  69 | $3428 | 133 | $3450 | $3478..$347F |
+|   6 | $3800 |  70 | $3828 | 134 | $3850 | $3878..$387F |
+|   7 | $3C00 |  71 | $3C28 | 135 | $3C50 | $3C78..$3C7F |
+|   8 | $2080 |  72 | $20A8 | 136 | $20D0 | $20F8..$20FF |
+|   9 | $2480 |  73 | $24A8 | 137 | $24D0 | $24F8..$24FF |
+|  10 | $2880 |  74 | $28A8 | 138 | $28D0 | $28F8..$28FF |
+|  11 | $2C80 |  75 | $2CA8 | 139 | $2CD0 | $2CF8..$2CFF |
+|  12 | $3080 |  76 | $30A8 | 140 | $30D0 | $30F8..$30FF |
+|  13 | $3480 |  77 | $34A8 | 141 | $34D0 | $34F8..$34FF |
+|  14 | $3880 |  78 | $38A8 | 142 | $38D0 | $38F8..$38FF |
+|  15 | $3C80 |  79 | $3CA8 | 143 | $3CD0 | $3CF8..$3CFF |
+|  16 | $2100 |  80 | $2128 | 144 | $2150 | $2178..$217F |
+|  17 | $2500 |  81 | $2528 | 145 | $2550 | $2578..$257F |
+|  18 | $2900 |  82 | $2928 | 146 | $2950 | $2978..$297F |
+|  19 | $2D00 |  83 | $2D28 | 147 | $2D50 | $2D78..$2D7F |
+|  20 | $3100 |  84 | $3128 | 148 | $3150 | $3178..$317F |
+|  21 | $3500 |  85 | $3528 | 149 | $3550 | $3578..$357F |
+|  22 | $3900 |  86 | $3928 | 150 | $3950 | $3978..$397F |
+|  23 | $3D00 |  87 | $3D28 | 151 | $3D50 | $3D78..$3D7F |
+|  24 | $2180 |  88 | $21A8 | 152 | $21D0 | $21F8..$21FF |
+|  25 | $2580 |  89 | $25A8 | 153 | $25D0 | $25F8..$25FF |
+|  26 | $2980 |  90 | $29A8 | 154 | $29D0 | $29F8..$29FF |
+|  27 | $2D80 |  91 | $2DA8 | 155 | $2DD0 | $2DF8..$2DFF |
+|  28 | $3180 |  92 | $31A8 | 156 | $31D0 | $31F8..$31FF |
+|  29 | $3580 |  93 | $35A8 | 157 | $35D0 | $35F8..$35FF |
+|  30 | $3980 |  94 | $39A8 | 158 | $39D0 | $39F8..$39FF |
+|  31 | $3D80 |  95 | $3DA8 | 159 | $3DD0 | $3DF8..$3DFF |
+|  32 | $2200 |  96 | $2228 | 160 | $2250 | $2278..$227F |
+|  33 | $2600 |  97 | $2628 | 161 | $2650 | $2678..$267F |
+|  34 | $2A00 |  98 | $2A28 | 162 | $2A50 | $2A78..$2A7F |
+|  35 | $2E00 |  99 | $2E28 | 163 | $2E50 | $2E78..$2E7F |
+|  36 | $3200 | 100 | $3228 | 164 | $3250 | $3278..$327F |
+|  37 | $3600 | 101 | $3628 | 165 | $3650 | $3678..$367F |
+|  38 | $3A00 | 102 | $3A28 | 166 | $3A50 | $3A78..$3A7F |
+|  39 | $3E00 | 103 | $3E28 | 167 | $3E50 | $3E78..$3E7F |
+|  40 | $2280 | 104 | $22A8 | 168 | $22D0 | $22F8..$22FF |
+|  41 | $2680 | 105 | $26A8 | 169 | $26D0 | $26F8..$26FF |
+|  42 | $2A80 | 106 | $2AA8 | 170 | $2AD0 | $2AF8..$2AFF |
+|  43 | $2E80 | 107 | $2EA8 | 171 | $2ED0 | $2EF8..$2EFF |
+|  44 | $3280 | 108 | $32A8 | 172 | $32D0 | $32F8..$32FF |
+|  45 | $3680 | 109 | $36A8 | 173 | $36D0 | $36F8..$36FF |
+|  46 | $3A80 | 110 | $3AA8 | 174 | $3AD0 | $3AF8..$3AFF |
+|  47 | $3E80 | 111 | $3EA8 | 175 | $3ED0 | $3EF8..$3EFF |
+|  48 | $2300 | 112 | $2328 | 176 | $2350 | $2378..$237F |
+|  49 | $2700 | 113 | $2728 | 177 | $2750 | $2778..$277F |
+|  50 | $2B00 | 114 | $2B28 | 178 | $2B50 | $2B78..$2B7F |
+|  51 | $2F00 | 115 | $2F28 | 179 | $2F50 | $2F78..$2F7F |
+|  52 | $3300 | 116 | $3328 | 180 | $3350 | $3378..$337F |
+|  53 | $3700 | 117 | $3728 | 181 | $3750 | $3778..$377F |
+|  54 | $3B00 | 118 | $3B28 | 182 | $3B50 | $3B78..$3B7F |
+|  55 | $3F00 | 119 | $3F28 | 183 | $3F50 | $3F78..$3F7F |
+|  56 | $2380 | 120 | $23A8 | 184 | $23D0 | $23F8..$23FF |
+|  57 | $2780 | 121 | $27A8 | 185 | $27D0 | $27F8..$27FF |
+|  58 | $2B80 | 122 | $2BA8 | 186 | $2BD0 | $2BF8..$2BFF |
+|  59 | $2F80 | 123 | $2FA8 | 187 | $2FD0 | $2FF8..$2FFF |
+|  60 | $3380 | 124 | $33A8 | 188 | $33D0 | $33F8..$33FF |
+|  61 | $3780 | 125 | $37A8 | 189 | $37D0 | $37F8..$37FF |
+|  62 | $3B80 | 126 | $3BA8 | 190 | $3BD0 | $3BF8..$3BFF |
+|  63 | $3F80 | 127 | $3FA8 | 191 | $3FD0 | $3FF8..$3FFF |
 
 Don't worry if the address pattern makes no sense right now -- we'll reveal that later.
 
+Here's the [Javascript source code](list_hgr_table.html) to generate this table:
+
+```Javascript
+
+```Javascript
+    function int2pad( n, pad )
+    {
+        return (Array( pad+1 ).join(' ') + n).slice(-pad);
+    }
+
+    function word2hex$( w )
+    {
+        return "$" + ("    " + w.toString(16).toUpperCase()).slice(-4);
+    }
+
+    var hgr = [];
+    for( var y = 0; y < 193; ++y ) // Intentional 1 scanline too many!
+        hgr[ y ] = 0x2000 + ((y/64)|0)*0x28 + ((y%8)|0)*0x400 + ((y/8)&7)*0x80;
+
+    var text = "", s = " | ";
+    for( y = 0; y < 64; ++y )
+    {
+        var a0 = hgr[ y +   0 ];
+        var a1 = hgr[ y +  64 ];
+        var a2 = hgr[ y + 128 ];
+        text += "| "
+        + int2pad( y +   0, 3 ) + s + word2hex$( a0 ) + s
+        + int2pad( y +  64, 3 ) + s + word2hex$( a1 ) + s
+        + int2pad( y + 128, 3 ) + s + word2hex$( a2 ) + s
+        + word2hex$( a2 + 40 ) + ".."
+        + word2hex$( a2 + 47 ) + " |\n";
+    }
+    console.log( text );
+```
 
 ### No FONT data in ROM