The BinaryPlace(L, x) function performs a binary placement of x in L, where L is assumed to be a sorted list.  It returns the value n in list L such that L[n] precedes x. It is possible that n is  if x precedes all elements in the list.

In this form of the calling sequence, x must be of type numeric or string and the list should have operands of the same type in ascending order.

The returned value  is such that  is still a sorted list.

If three or more arguments are specified in the calling sequence, then  must return true if x precedes y.