code: private static boolean crosses_(String scl, int dim_a, int dim_b) {
  		if (dim_a > dim_b) {
  			// Valid for area-Line, area-Point, Line-Point
  			if (scl.charAt(0) == 'T' && scl.charAt(1) == '*'
  					&& scl.charAt(2) == '*' && scl.charAt(3) == '*'
  					&& scl.charAt(4) == '*' && scl.charAt(5) == '*'
  					&& scl.charAt(6) == 'T' && scl.charAt(7) == '*'
  					&& scl.charAt(8) == '*')
  				return true;
  
  			return false;
  		}
  
  		if (dim_a == 1 && dim_b == 1) {
  			// Valid for Line-Line
  			if (scl.charAt(0) == '0' && scl.charAt(1) == '*'
  					&& scl.charAt(2) == '*' && scl.charAt(3) == '*'
  					&& scl.charAt(4) == '*' && scl.charAt(5) == '*'
  					&& scl.charAt(6) == '*' && scl.charAt(7) == '*'
  					&& scl.charAt(8) == '*')
  				return true;
  		}
  
  		return false;
  	}
docs: Checks whether the scl string is the crosses relation.