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diff --git a/manual/APPNOTE_011_Design_Investigation/foobaraddsub.v b/manual/APPNOTE_011_Design_Investigation/foobaraddsub.v
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+module foobaraddsub(a, b, c, d, fa, fs, ba, bs);
+ input [7:0] a, b, c, d;
+ output [7:0] fa, fs, ba, bs;
+ assign fa = a + (* foo *) b;
+ assign fs = a - (* foo *) b;
+ assign ba = c + (* bar *) d;
+ assign bs = c - (* bar *) d;
+endmodule