132     { "Sound   : (none)",            DEMOWIN_ITM_NONE,       MNU_sound,        NULL },
133     { "AuxA    : (none)",            DEMOWIN_ITM_NONE,       MNU_auxa,         NULL },
134     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
135     { "Position: C Stick",           DEMOWIN_ITM_NONE,       MNU_position,     NULL },
136     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
137     { "Compress: No",                DEMOWIN_ITM_NONE,       MNU_compressor,   NULL },
138     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
139     { "Kill All Voices",             DEMOWIN_ITM_NONE,       MNU_kill_all,     NULL },
140     { "",                            DEMOWIN_ITM_TERMINATOR, NULL,             NULL }
147     NULL,                       // window handle
153     NULL,                       // callback for menu open event 
154     NULL,                       // callback for cursor move event
155     NULL,                       // callback for item select event
156     NULL,                       // callback for cancel event
297             v = NULL;  in play_sfx()
330                     demo_voices[i].ax_voice = NULL;  in ax_demo_callback()
361         demo_voices[v->index].ax_voice = NULL;  in ax_drop_voice_callback()
362         demo_voices[v->index].sp_entry = NULL;  in ax_drop_voice_callback()
455             AXRegisterAuxACallback(NULL, NULL);  in MNU_auxa()
725         return NULL;  in LoadFileIntoRam()
732         return NULL;  in LoadFileIntoRam()
739     if (buffer == NULL)  in LoadFileIntoRam()
742         return NULL;  in LoadFileIntoRam()
752         return NULL;  in LoadFileIntoRam()
786     DEMOInit(NULL);  in main()
796     AIInit(NULL);  in main()
821     SPInitSoundTable(sp_table, sp_data, NULL);  in main()
856         NULL  in main()