@BeginModule
@NewPage
@Name      = Enlarge
@Title     = Enlarge fields
@Section   = Modification
@Class     = Modification
@Arguments = ifile ofile
@Operators = enlarge
@EndModule


@BeginOperator_enlarge
@Title     = Enlarge fields
@Parameter = grid

@BeginDescription
Enlarge all fields of @file{ifile} to a user given grid. Normally only the last 
field element is used for the enlargement. If however the input and output
grid are rectangular, a zonal or meridional enlargement is possible.
Zonal enlargement takes place, if the xsize of the input field is 1 and 
the ysize of both grids are the same. For meridional enlargement the ysize
must be 1 and the xsize of both grids must have the same size.
@EndDescription
@EndOperator


@BeginParameter grid
@Item = grid
STRING  Target grid description file or name
@EndParameter


@BeginExample
Assumed you want to add two datasets. The first dataset is on a
T21 grid (2048 field elements) and the second dataset is only a
global mean (1 field element).
Before you can add these two datasets the second dataset must be
enlarged to the grid size of the first dataset:
@BeginVerbatim
   cdo enlarge,t21grid ifile2 tmpfile
   cdo add ifile1 tmpfile ofile
@EndVerbatim
Or shorter with pipes:
@BeginVerbatim
   cdo add ifile1 -enlarge,t21grid ifile2 ofile
@EndVerbatim
@EndExample
