diff --git a/shematic.svg b/shematic.svg
index acc0ebe..93a57ba 100644
--- a/shematic.svg
+++ b/shematic.svg
@@ -35,68 +35,68 @@
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   <text x="90" y="161" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">1</text>
-  <text x="185" y="161" text-anchor="end" fill="#ffcc66" font-size="10">Z1 +</text>
+  <text x="185" y="161" text-anchor="end" fill="#ffcc66" font-size="10">Z1 L</text>
   <circle cx="230" cy="157" r="4" fill="#ffcc66" opacity="0.8"/>
 
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   <text x="90" y="183" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">2</text>
-  <text x="185" y="183" text-anchor="end" fill="#ffcc66" font-size="10">Z1 −</text>
+  <text x="185" y="183" text-anchor="end" fill="#ffcc66" font-size="10">Z1 N</text>
   <circle cx="230" cy="179" r="4" fill="#ffcc66" opacity="0.5"/>
 
   <!-- Zone 2 -->
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   <text x="90" y="209" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">3</text>
-  <text x="185" y="209" text-anchor="end" fill="#ffaa44" font-size="10">Z2 +</text>
+  <text x="185" y="209" text-anchor="end" fill="#ffaa44" font-size="10">Z2 L</text>
   <circle cx="230" cy="205" r="4" fill="#ffaa44" opacity="0.8"/>
 
   <rect x="75" y="218" width="30" height="18" rx="3" fill="#1e3a50" stroke="#3a7aaa" stroke-width="1"/>
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-  <text x="185" y="231" text-anchor="end" fill="#ffaa44" font-size="10">Z2 −</text>
+  <text x="185" y="231" text-anchor="end" fill="#ffaa44" font-size="10">Z2 N</text>
   <circle cx="230" cy="227" r="4" fill="#ffaa44" opacity="0.5"/>
 
   <!-- Zone 3 -->
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   <text x="90" y="257" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">5</text>
-  <text x="185" y="257" text-anchor="end" fill="#ff8844" font-size="10">Z3 +</text>
+  <text x="185" y="257" text-anchor="end" fill="#ff8844" font-size="10">Z3 L</text>
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-  <text x="185" y="279" text-anchor="end" fill="#ff8844" font-size="10">Z3 −</text>
+  <text x="185" y="279" text-anchor="end" fill="#ff8844" font-size="10">Z3 N</text>
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   <text x="90" y="305" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">7</text>
-  <text x="185" y="305" text-anchor="end" fill="#ff6633" font-size="10">Z4 +</text>
+  <text x="185" y="305" text-anchor="end" fill="#ff6633" font-size="10">Z4 L</text>
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   <text x="90" y="327" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">8</text>
-  <text x="185" y="327" text-anchor="end" fill="#ff6633" font-size="10">Z4 −</text>
+  <text x="185" y="327" text-anchor="end" fill="#ff6633" font-size="10">Z4 N</text>
   <circle cx="230" cy="323" r="4" fill="#ff6633" opacity="0.5"/>
 
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   <text x="90" y="353" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">9</text>
-  <text x="185" y="353" text-anchor="end" fill="#ee4422" font-size="10">Z5 +</text>
+  <text x="185" y="353" text-anchor="end" fill="#ee4422" font-size="10">Z5 L</text>
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   <text x="90" y="375" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">10</text>
-  <text x="185" y="375" text-anchor="end" fill="#ee4422" font-size="10">Z5 −</text>
+  <text x="185" y="375" text-anchor="end" fill="#ee4422" font-size="10">Z5 N</text>
   <circle cx="230" cy="371" r="4" fill="#ee4422" opacity="0.5"/>
 
   <!-- Zone 6 -->
   <rect x="75" y="388" width="30" height="18" rx="3" fill="#1e3a50" stroke="#3a7aaa" stroke-width="1"/>
   <text x="90" y="401" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">11</text>
-  <text x="185" y="401" text-anchor="end" fill="#dd2200" font-size="10">Z6 +</text>
+  <text x="185" y="401" text-anchor="end" fill="#dd2200" font-size="10">Z6 L</text>
   <circle cx="230" cy="397" r="4" fill="#dd2200" opacity="0.8"/>
 
   <rect x="75" y="410" width="30" height="18" rx="3" fill="#1e3a50" stroke="#3a7aaa" stroke-width="1"/>
   <text x="90" y="423" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">12</text>
-  <text x="185" y="423" text-anchor="end" fill="#dd2200" font-size="10">Z6 −</text>
+  <text x="185" y="423" text-anchor="end" fill="#dd2200" font-size="10">Z6 N</text>
   <circle cx="230" cy="419" r="4" fill="#dd2200" opacity="0.5"/>
 
   <!-- Separator line -->
@@ -106,12 +106,12 @@
   <!-- TC 1 -->
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   <text x="90" y="475" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">13</text>
-  <text x="185" y="475" text-anchor="end" fill="#44ffcc" font-size="10">TC1 +</text>
+  <text x="185" y="475" text-anchor="end" fill="#44ffcc" font-size="10">TC1 +/text>
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   <text x="90" y="497" text-anchor="middle" fill="#7ecfff" font-size="10" font-weight="bold">14</text>
-  <text x="185" y="497" text-anchor="end" fill="#44ffcc" font-size="10">TC1 −</text>
+  <text x="185" y="497" text-anchor="end" fill="#44ffcc" font-size="10">TC1 -/text>
   <circle cx="230" cy="493" r="4" fill="#44ffcc" opacity="0.4"/>
 
   <!-- TC 2 -->