@BeginModule
@NewPage
@Name      = Histogram
@Title     = Histogram
@Section   = Miscellaneous
@Arguments = ifile ofile
@Operators = histcount histsum histmean histfreq

@BeginDescription
This module creates bins for a histogram of the input data.
Only 2-dimensional input field are allowed. The ouput file 
contains one vertical level for each of the bins requested.
@EndDescription
@EndModule


@BeginOperator_histcount
@Title     = Histogram count
@Parameter = bins

@BeginDescription
Number of elements in the bin range.
@EndDescription
@EndOperator


@BeginOperator_histsum
@Title     = Histogram sum
@Parameter = bins

@BeginDescription
Sum of elements in the bin range.
@EndDescription
@EndOperator


@BeginOperator_histmean
@Title     = Histogram mean
@Parameter = bins

@BeginDescription
Mean of elements in the bin range.
@EndDescription
@EndOperator


@BeginOperator_histfreq
@Title     = Histogram frequency
@Parameter = bins

@BeginDescription
Frequency of elements in the bin range.
@EndDescription
@EndOperator


@BeginParameter bins
@Item = bins
FLOAT  Comma separated list of bin ranges (-inf and inf valid)
@EndParameter
