void Host_StartVideo(void);
void Host_Error(const char *error, ...) DP_FUNC_PRINTF(1) DP_FUNC_NORETURN;
void Host_Quit_f(cmd_state_t *cmd);
-void SV_ClientCommands(const char *fmt, ...) DP_FUNC_PRINTF(1);
-double SV_Frame(double time);
-void SV_Shutdown(void);
void Host_NoOperation_f(cmd_state_t *cmd);
void Host_LockSession(void);
void Host_UnlockSession(void);