Dear all, I find that the '#' do not work when it is in the %block BandLines
if I use this : %block BandLines 1 0.0000000000 0.0000000000 0.0000000000 \Gamma 100 0.0000000000 0.0000000000 0.500000 X #100 0.0000000000 0.0000000000 0.384615385 X %endblock BandLines then the band file will have 201 points. and if I use as this: %block BandLines 1 0.0000000000 0.0000000000 0.0000000000 \Gamma 100 0.0000000000 0.0000000000 0.500000 X %endblock BandLines #100 0.0000000000 0.0000000000 0.384615385 X then the band file will have 101 points. shanghui -- PHD student Division of Theoretical and Computational Sciences Hefei National Laboratory for Physical Sciences at the Microscale University of Science & Technology of China Hefei, Anhui 230026, P.R.China