int killBacktrack( char *in ) {
	int i = 0;
	while( in[i] != '\0' && in[i] != 'B' ) ++i;
	if( in[i] == '\0' ) return 0; //False, no more left
	while( in[i+1] != '\0' ) {
		in[i-1] = in[i+1]; // Copy everything back 2 places, overriding the BX statements
		++i;
	}
	in[i-1] = '\0';
	return 1; // True, killed a backtrack
}