135     { "Sound   : (none)",            DEMOWIN_ITM_NONE,       MNU_sound,        NULL },
136     { "AuxA    : (none)",            DEMOWIN_ITM_NONE,       MNU_auxa,         NULL },
137     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
138     { "Position: C Stick",           DEMOWIN_ITM_NONE,       MNU_position,     NULL },
139     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
140     { "Compress: No",                DEMOWIN_ITM_NONE,       MNU_compressor,   NULL },
141     { "",                            DEMOWIN_ITM_SEPARATOR,  NULL,             NULL },
142     { "Kill All Voices",             DEMOWIN_ITM_NONE,       MNU_kill_all,     NULL },
143     { "",                            DEMOWIN_ITM_TERMINATOR, NULL,             NULL }
150     NULL,                       // window handle
156     NULL,                       // callback for menu open event 
157     NULL,                       // callback for cursor move event
158     NULL,                       // callback for item select event
159     NULL,                       // callback for cancel event
300             v = NULL;  in play_sfx()
333                     demo_voices[i].ax_voice = NULL;  in ax_demo_callback()
364         demo_voices[v->index].ax_voice = NULL;  in ax_drop_voice_callback()
365         demo_voices[v->index].sp_entry = NULL;  in ax_drop_voice_callback()
458             AXRegisterAuxACallback(NULL, NULL);  in MNU_auxa()
783         return NULL;  in LoadFileIntoRam()
790         return NULL;  in LoadFileIntoRam()
797     if (buffer == NULL)  in LoadFileIntoRam()
800         return NULL;  in LoadFileIntoRam()
810         return NULL;  in LoadFileIntoRam()
844     DEMOInit(NULL);  in main()
854     AIInit(NULL);  in main()
879     SPInitSoundTable(sp_table, sp_data, NULL);  in main()
914         NULL  in main()