// top.v
`define N 32

`define TOP(a,b) a + b
`TOP( `TOP( b,1), `TOP( 42,  `TOP(100, c) ) )

`include "my_incl.vh"

`include "bar.vh"

`INCLUSION_FILES

`define single 11
`define multiple 20

`defaut_nettype wire

`undef multipl tt

 $display("Internal error: null handle at %s, line %d.",`__FILE__, `__LINE__); 

module top(input clk, input [`N-1:0] in1, output [`M-1:0] q);
 m1 u1(.clk(clk), .in1(in1), .q(q));
 wire a[`single:`multiple];
`BLOB

`xyz(1,a)

`xyz(1)

`MACRO1 ( 1 , , ) 

`MACRO1 ( , , 1 ) 

`MACRO1 ( 1 , , 3 , 4 ) 

`MACRO1 ( , ) 

`MACRO1 ( ) 

`MACRO1 

$display(`msg(left side,right side));

`macro_with_args( out, in, toomany)

`WB_DUT_U_ASSIGN(12,34)

 /* 
  comment
  */ 
endmodule // top