+/* function prototypes */
+int usage(void);
+int ivac_shutdown(t_ivac *ivac);
+int ivac_send_info(int channel,t_ivac *ivac);
+int ivac_send_quit(int channel,t_ivac *ivac);
+int ivac_receive_info(int channel,t_ivac *ivac);
+int ivac_event_cb(t_event *event,void *ptr);
+int ivac_regular_cb(t_event *event,void *ptr);
+int ivac_parse_command(t_input *input,void *ptr);
+int ivac_display_head(t_ivac *ivac);
+int ivac_display_box(t_ivac *ivac);
+int ivac_display_box_content(t_ivac *ivac);
+int ivac_display_console(t_ivac *ivac);
+int ivac_display_console_content(t_ivac *ivac);
+int ivac_display_prompt(t_ivac *ivac);
+int ivac_display_prompt_content(t_ivac *ivac);
+int ivac_display_content(t_ivac *ivac);
+int ivac_display(t_ivac *ivac);
+int ivac_display_draw(t_ivac *ivac);
+int ivac_add_to_monitor(t_ivac *ivac,char *msg);
+