Explain FIC and FIU in overview image

docs/tex_common/img/Overview.svg

@@ -42,9 +42,9 @@
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@@ -201,13 +201,15 @@
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-                 transform="matrix(0,1,0.9994503,0,171.12,352.191)"
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-                   y="0"
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+                 id="text100"
+                 x="361.91586"
+                 y="171.16705"><tspan
                    sodipodi:role="line"
-                   id="tspan102">FIC</tspan></text>
+                   id="tspan102"
+                   x="361.91586"
+                   y="171.16705">FI Controller (FIC)</tspan></text>
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@@ -289,13 +291,15 @@
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+                 x="522.53912"
+                 y="171.16705"><tspan
+                   x="522.53912"
                    sodipodi:role="line"
-                   id="tspan162">FIU 0</tspan></text>
+                   id="tspan162"
+                   y="171.16705">FI Unit 0 (FIU 0)</tspan></text>
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@@ -518,15 +522,20 @@
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