<macros>
    <xml name="requirements_twobit">
        <requirements>
            <requirement type="package" version="340">ucsc_twobit</requirement>
            <yield />
        </requirements>
    </xml>
    <xml name="environment_LC_COLLATE">
        <environment_variables>
            <!-- Sort uppercase letters before lowercase (required by UCSC tools) -->
            <environment_variable name="LC_COLLATE">C</environment_variable>
            <yield />
        </environment_variables>
    </xml>
    <xml name="citations">
        <citations>
            <citation type="bibtex">
        @article{Kent01062002,
author = {Kent, W. James and Sugnet, Charles W. and Furey, Terrence S. and Roskin, Krishna M. and Pringle, Tom H. and Zahler, Alan M. and Haussler,  and David},
title = {The Human Genome Browser at UCSC},
volume = {12},
number = {6},
pages = {996-1006},
year = {2002},
doi = {10.1101/gr.229102},
URL = {http://genome.cshlp.org/content/12/6/996.abstract},
eprint = {http://genome.cshlp.org/content/12/6/996.full.pdf+html},
journal = {Genome Research}
}
            </citation>
            <yield />
        </citations>
    </xml>

    <token name="@OPTIONAL_PARAM_FUNC@">
<![CDATA[
        #def optional_param($_flag, $_flag_value, $_sep="=")
            #if str($_flag_value) and str($_flag_value).strip():
                ${_flag}${_sep}${_flag_value}
            #end if
        #end def
]]>
    </token>
</macros>