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<TITLE>module vert_diff_mod</TITLE>
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<A HREF="#INTERFACE">PUBLIC INTERFACE</A> / 
<A HREF="#DATA_TYPES">DATA</A> / 
<A HREF="#ROUTINES">ROUTINES</A> / 
<A HREF="#NAMELIST">NAMELIST</A> / 
<A HREF="#DIAGNOSTICS">DIAGNOSTICS</A> / 
<A HREF="#CHANGES">CHANGES</A> / 
<A HREF="#ERRORS">ERRORS</A> / 
<A HREF="#REFERENCES">REFERENCES</A> / 
<A HREF="#NOTES">NOTES</A> 
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<H2>Vert_diff_mod</H2>
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