help confusion with mldivide and mrdivide and inv()

Hi, I am a little confused by help documentation on mldivide, mrdivide and inv()

Help on mrdivide says, "If A is a square matrix, B/A is roughly the same as B*inv(A). If A is an n-by-n matrix and B is a row vector with n elements, or a matrix with several such rows, then X = B/A is the solution to the equation XA = B computed by Gaussian elimination with partial pivoting. "

Help on mldivide says, "If A is a square matrix, A\B is roughly the same as inv(A)*B, except it is computed in a different way. If A is an n-by-n matrix and B is a column vector with n elements, or a matrix with several such columns, then X = A\B is the solution to the equation AX = B. " This implies "to me" that mldivide is not done by Gaussian Elimination.

However, help on inv() suggests that mldivide is done by Gaussian Elimination. Perhaps mldivide was previously done with Gaussian Elimination, but now it is not. (?) If my interpretation is correct, until which version did mldivide use Gaussian Elimination? Does the help on "inv()" need updating?

Thanks,

dr