187     { "Tests",                  DEMOWIN_ITM_SEPARATOR,  NULL,                 NULL },
188     { "  Ping test",            DEMOWIN_ITM_NONE,       MNU_start_ping_test,  NULL },
189     { "  Voice test",           DEMOWIN_ITM_NONE,       MNU_start_voice_test, NULL },
190     { " ",                      DEMOWIN_ITM_SEPARATOR,  NULL,                 NULL },
191     { "Manual AX Controls",     DEMOWIN_ITM_SEPARATOR,  NULL,                 NULL },
192     { "  Toggle Compressor",    DEMOWIN_ITM_NONE,       MNU_toggle_comp,      NULL },
193     { "  Play Looping Hum",     DEMOWIN_ITM_NONE,       MNU_play_hum,         NULL },
194     { "  Play Ping",            DEMOWIN_ITM_NONE,       MNU_play_ping,        NULL },
195     { "  Play Voice",           DEMOWIN_ITM_NONE,       MNU_play_voice,       NULL },
196     { "  Stop All Voices",      DEMOWIN_ITM_NONE,       MNU_stop_sfx,         NULL },
197     { " ",                      DEMOWIN_ITM_SEPARATOR,  NULL,                 NULL },
198     { "",                       DEMOWIN_ITM_TERMINATOR, NULL,                 NULL }
204     NULL,                       // window handle
210     NULL,                       // callback for menu open event 
212     NULL,                       // callback for item select event
213     NULL,                       // callback for cancel event
418             demo_voice[i].ax_voice = NULL;  in init_demo_voices()
419             demo_voice[i].sp_entry = NULL;  in init_demo_voices()
440             if (NULL == demo_voice[i].ax_voice)  in get_demo_voice()
447         return(NULL);  in get_demo_voice()
472                     demo_voice[i].ax_voice = NULL;  in ax_demo_callback()
505                 demo_voice[i].ax_voice = NULL;  in ax_drop_voice_callback()
506                 demo_voice[i].sp_entry = NULL;  in ax_drop_voice_callback()
864         return NULL;  in LoadFileIntoRam()
871         return NULL;  in LoadFileIntoRam()
878     if (buffer == NULL)  in LoadFileIntoRam()
881         return NULL;  in LoadFileIntoRam()
891         return NULL;  in LoadFileIntoRam()
914     DEMOInit(NULL);  in main()
922     AIInit(NULL);  in main()
947     SPInitSoundTable(sp_table, sp_data, NULL);  in main()
971 …DebugWin   = DEMOWinCreateWindow((u16)(MenuPtr->handle->x2+10), 20, 620, 440, "Debug", 1024, NULL);  in main()