I'm trying to solve the problem C-ORXOR. While reading the editorial of this problem there is a term used Which is Bitwise Exhaustive Search

According to the definition given in editorial For implementation, a useful way is bitwise exhaustive search, in which each combination of N−1 choices of whether or not to put the bars is regarded as N−1-digit binary integer, and corresponds to an integer between 0 (inclusive) and 2^(N−1)(exclusive).

Can Someone Please explain this Term with example !!!