Update Manual PDF

Author: duanzaixu

doc/GPUMD-Manual.pdf

@@ -10,7 +10,7 @@ This file contains the squared frequencies :math:`\omega^2(\boldsymbol{k})` at d
 File format
 -----------
 
-There are :attr:`N_kpoints` rows and :attr:`3 * N_basis` columns, where :attr:`N_basis` is the number of basis atoms in the unit cell defined in the :ref:`basis.in input file <basis_in>` and :attr:`N_kpoints` is the number of :math:`\boldsymbol{k}`-points in the :ref:`kpoints.in input file <kpoints_in>`.
+There are :attr:`N_kpoints` rows and :attr:`3 * N_basis + 1` columns, where :attr:`N_basis` is the number of atoms in model.xyz, and :attr:`N_kpoints` is the number of k-points generated from high-symmetry points in the :ref:`kpoints.in input file <kpoints_in>`.
 
 Each line corresponds to one :math:`\boldsymbol{k}`-point.
-Each line contains :attr:`3 * N_basis` numbers, corresponding to the :attr:`3 * N_basis` values for :math:`\omega^2(\boldsymbol{k})` (in units of THz\ :sup:`2`) in the order of increasing magnitude.
+Each line contains :attr:`3 * N_basis + 1` numbers, the first column represents the relative distance along the high-symmetry path, while the remaining columns correspond to the :attr:`3 * N_basis` values for :math:`\omega^2(\boldsymbol{k})` (in units of THz\ :sup:`2`) in the order of increasing magnitude.