  We report calculations of energy levels and oscillator strengths for
transitions in W XL, undertaken with the general-purpose relativistic atomic
structure package ({\sc grasp}) and flexible atomic code ({\sc fac}).
Comparisons are made with existing results and the accuracy of the data is
assessed. Discrepancies with the most recent results of S. Aggarwal et al.
[Can. J. Phys. {\bf 91} (2013) 394] are up to 0.4 Ryd and up to two orders of
magnitude for energy levels and oscillator strengths, respectively.
Discrepancies for lifetimes are even larger, up to four orders of magnitude for
some levels. Our energy levels are estimated to be accurate to better than 0.5%
(i.e. 0.2 Ryd), whereas results for oscillator strengths and lifetimes should
be accurate to better than 20%.
