def helpEpilog():
    """
    text for help epilog
    """
    inputFileFormatHelp = """
------------------------------------------------------
Input File Format
------------------------------------------------------
iterativeWGCNA expects a tab-delimited text file containing
gene expression data arranged such that there is one
row per gene and one column per sample.  The first column
should contain unique gene identifiers.  For example:

GENE    Sample1    Sample2    Sample3
Gata1    500    715    1000
Phtf2    60    1000    1600
"""
    wgcnaParametersHelp = """
------------------------------------------------------
WGCNA Parameters
------------------------------------------------------
iterativeWGCNA can accept any parameter valid for the WGCNA
blockwiseModules function.

See http://www.inside-r.org/packages/cran/wgcna/docs/blockwiseModules

To specify these parameters use the --wgcnaParameters flag followed by
a comma separated list of parameter=value pairs.  For example:

--wgcnaParameters maxBlockSize=5000,corType=bicor,power=10

sets the maximum block size to 5000 genes,
the correlation type to the biweight correlation,
and the power-law scaling factor (beta) to 10

If parameters are not specified, iterativeWGCNA uses the default WGCNA settings,
except for the following:

minModuleSize=20
saveTOMs=FALSE
minKMEtoStay=0.8
minCoreKME=0.8
networkType=signed
numericLabels=TRUE

"""
    return inputFileFormatHelp + '\n\n' + wgcnaParametersHelp
