@BeginModule
@Name      = Sethalo
@Title     = Set the left and right bounds of a field
@Section   = Miscellaneous
@Arguments = ifile ofile
@Operators = sethalo

@BeginDescription
This operator sets the left and right bounds of the rectangularly
understood fields. Positive numbers of the parameter @math{lhalo} enlarges 
the left bound by the given number of columns from the right bound. The
parameter @math{rhalo} does the similar for the right bound.
Negative numbers of the parameter @math{lhalo}/@math{rhalo} can be used to remove
the given number of columns of the left and right bounds.
@EndDescription
@EndModule


@BeginOperator_sethalo
@Title     = Set the left and right bounds of a field
@Parameter = lhalo rhalo
@EndOperator

@BeginParameter
@Item = lhalo
INTEGER  Left halo
@Item = rhalo
INTEGER  Right halo
@EndParameter

@EndOperator
