Index: 06_common/index.html
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 <p>
 <table border=1>
 	<tr><th> grid spec                           <th> description
-	<tr><td> <pre>10 mil</pre>                   <th> anonymous 10 mil grid with no offset
-	<tr><td> <pre>1.5 mm</pre>                   <th> anonymous 1.5 mm grid with no offset
-	<tr><td> <pre>20 mil@1mil;-3mil</pre>        <th> 20 mil grid with a horizontal offset of +1 mil and vertical offset of -3 mil
-	<tr><td> <pre>1.5 mm!mm</pre>                <th> 1.5 mm grid; when activated, switch untis to mm
-	<tr><td> <pre>placing dips:100 mil</pre>     <th> named grid
-	<tr><td> <pre>leds:1mm@0.5mm;-0.1mm!mm</pre> <th> all the above features, combined
+	<tr><td> <pre>10 mil</pre>                   <td> anonymous 10 mil grid with no offset
+	<tr><td> <pre>1.5 mm</pre>                   <td> anonymous 1.5 mm grid with no offset
+	<tr><td> <pre>20 mil@1mil;-3mil</pre>        <td> 20 mil grid with a horizontal offset of +1 mil and vertical offset of -3 mil
+	<tr><td> <pre>1.5 mm!mm</pre>                <td> 1.5 mm grid; when activated, switch untis to mm
+	<tr><td> <pre>placing dips:100 mil</pre>     <td> named grid
+	<tr><td> <pre>leds:1mm@0.5mm;-0.1mm!mm</pre> <td> all the above features, combined
 </table>
 
 <h3> 6.2.2. Custom grid </h3>