Me%xxxxx

some variables are defined in type module(me) . Here we only listed frequently used variables
For example:

 me%x 
 me%y
 me%n
 me%dope
 ...
 ...

Node based.

       INTEGER(I4B) :: nnode   ! number of nodes
       INTEGER(I4B) :: nelement  ! number of elements
       INTEGER(I4B), DIMENSION(:,:), POINTER :: element  ! format (3,i)  i is the i-th element, (1,i) is element's first node, (2,i) is element's 2nd node,  (3,i) is element's 3rd node, 
       INTEGER(I4B), DIMENSION(:), POINTER :: par   ! par is the node's region number 
      
       real(DP), DIMENSION(:), POINTER :: x  ! node's position x
       real(DP), DIMENSION(:), POINTER :: y  ! node's position y
       real(DP), DIMENSION(:), POINTER :: n  ! node's electron density
       real(DP), DIMENSION(:), POINTER :: p   ! node's hole density
       real(DP), DIMENSION(:), POINTER :: eg   ! node's bandgap
       real(DP), DIMENSION(:), POINTER :: dope  ! node's dopant density
       real(DP), DIMENSION(:), POINTER :: ea   ! node's dopant activation energy
       real(DP), DIMENSION(:,:), POINTER :: efmass   ! effective mass of node (1,i):electron parallel , node (2,i):electron perp , node (3,i):heavy hole , node (4,i): light hole 
       real(DP), DIMENSION(:), POINTER :: Ecoff  ! band offset ratio
       real(DP), DIMENSION(:,:), POINTER :: pe     ! polarization field  (1,i) is the Polarization along growth (y or z).  polarization field  (2 ,i) is px
       real(DP), DIMENSION(:), POINTER :: trapNt    ! Trap density
       real(DP), DIMENSION(:), POINTER :: trapEt     ! trap level
       real(DP), DIMENSION(:), POINTER :: trapdegenercy   ! trap degeneracy
       real(DP), DIMENSION(:), POINTER :: traptaun    ! trap electron lifetime
       real(DP), DIMENSION(:), POINTER :: traptaup     ! trap hole lifetime
       real(DP), DIMENSION(:), POINTER :: trapeffchg    ! trapped charges
       real(DP), DIMENSION(:), POINTER :: mun    ! electron mobility
       real(DP), DIMENSION(:), POINTER :: mup    ! hole mobility
       real(DP), DIMENSION(:), POINTER :: taun   ! electron nonradiative lifetime
       real(DP), DIMENSION(:), POINTER :: taup    ! hole nonradiative lifetime
       real(DP), DIMENSION(:), POINTER :: Ex    ! electric field along x (including hetero interface dEc)
       real(DP), DIMENSION(:), POINTER :: Ey    ! electric field along y (including hetero interface dEc)
       real(DP), DIMENSION(:), POINTER :: pureEx  ! electric field along x (pure Ex)
       real(DP), DIMENSION(:), POINTER :: pureEy  ! electric field along x (pure Ey)
       real(DP), DIMENSION(:), POINTER :: Jx    ! electron current Jx
       real(DP), DIMENSION(:), POINTER :: Jy    ! electron current Jy
       real(DP), DIMENSION(:), POINTER :: Jpx   ! hole current Jpx
       real(DP), DIMENSION(:), POINTER :: Jpy   ! hole current Jpy
       real(DP), DIMENSION(:), POINTER :: generation  ! generation rate
       real(DP), DIMENSION(:), POINTER :: RecombineB  ! B coefficient
       real(DP), DIMENSION(:), POINTER :: AugerC   ! Auger coefficient
       real(DP), DIMENSION(:), POINTER :: heatC    ! heat capacity
       real(DP), DIMENSION(:), POINTER :: kappaEL   ! thermal conductive coefficient

element based

       real(DP), DIMENSION(:), POINTER :: xp     ! element's position x
       real(DP), DIMENSION(:), POINTER :: yp     ! element's position y

       INTEGER(I4B), DIMENSION(:), POINTER :: parEl   ! element's region number
       real(DP), DIMENSION(:), POINTER :: egEl   ! element bandgap
       real(DP), DIMENSION(:,:), POINTER :: peEl   ! element polarization field
       real(DP), DIMENSION(:), POINTER :: tEl   ! element temperature
       real(DP), DIMENSION(:,:), POINTER :: diEl  ! element dielectric constant
       real(DP), DIMENSION(:), POINTER :: munEl    ! element electron mobility       
       real(DP), DIMENSION(:), POINTER :: mupEl    ! element hole mobility.