x, y, z
Set the cell origin, always defined as the position of the node (000).
For 
conventional, 
primitive, 
wigner and 
rhombus volumes, the origin is initially at the lower-left
corner. For 
sphere and 
projection volumes, the origin 
is initially at the center. When the volume is 
projection, 
the origin cannot be changed.
  
Example: <cell ... x="0.0" y="0.0" z="0.0"/> (default)
(defined in GAMGI_MESA_CELL_X, GAMGI_MESA_CELL_Y and GAMGI_MESA_CELL_Z)
Allowed values: real (optional, coupled)
  
e1, e2, e3
  
Set the three Euler angles controlling the cell orientation. The first 
rotation (e1), around the initial y axis, must be between 
0 
and 
180 degrees. The second rotation (e2), around the initial 
z axis, must be between 
0 and 
360 degrees. The third rotation 
(e3), around the final z axis, must be between 
0 and 
360.
By default (e1, e2 and e3 equal to zero), the first crystallographic 
vector is aligned along the x-axis, the second vector lies above, on 
the x-y plane, and the third vector has a positive z coordinate, thus 
pointing to the user (right-handed orientation).
  
Example: <cell ... e1="0.0" e2="0.0" e3="0.0"/> (default)
(defined in GAMGI_MESA_CELL_E1, GAMGI_MESA_CELL_E2 and GAMGI_MESA_CELL_e3)
Allowed values: e1: 0.0 - 180.0, e2, e3: 0.0 - 360.0 (optional, coupled)