extern struct output_format output_text_hex;
extern struct output_format output_binary;
extern struct output_format output_vcd;
+extern struct output_format output_ols;
extern struct output_format output_gnuplot;
extern struct output_format output_analog;
&output_text_hex,
&output_binary,
&output_vcd,
+ &output_ols,
&output_gnuplot,
&output_analog,
NULL,